Makoto SAKAGUCHIProfessor
■Researcher basic information
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■Research activity information
Paper
- 〔Major achievements〕A Comment on the Higher-Spin Gauge Models
Ryota Fujii; Makoto Sakaguchi
Mod. Phys. Lett. A, https://arxiv.org/abs/2411.13984, Dec. 2024, [Reviewed] - 〔Major achievements〕Supersymmetric Non-abelian DBI Equations from Open Pure Spinor Superstring
Ryota Fujii; Sota Hanazawa; Hiraki Kanehisa; Makoto Sakaguchi, Corresponding
Phys.Rev.D 108 (2023) 4, 046002,http://arxiv.org/abs/2304.04899, 12 Apr. 2023, [Reviewed] - The International Linear Collider: Report to Snowmass 2021
2022 Snowmass Summer Study,https://arxiv.org/abs/2203.07622, 15 Mar. 2022 - Interacting Higher-Spin Gauge Models in BRST-antifield Formalism
Ryota Fujii; Hiraki Kanehisa; Makoto Sakaguchi; Haruya Suzuki, Corresponding
http://arxiv.org/abs/2110.04990, 12 Oct. 2021 - 〔Major achievements〕Supersymmetric DBI Equations in Diverse Dimensions from BRS Invariance of Pure Spinor Superstring
Sota Hanazawa and Makoto Sakaguchi, Last
Phys.Rev.D100 (2019) 046006,(14 pages), 05 Aug. 2019, [Reviewed] - 〔Major achievements〕Non-commutative M-branes from open pure spinor supermembrane
Sota Hanazawa; Makoto Sakaguchi, Open supermembrane with a constant three-form flux in the pure spinor formalism is examined. The BRST symmetry of the open supermembrane action leads to non-commutative (NC) M-branes. In addition to the NC M5-brane with a self-dual two-form flux, we find a NC M9-brane with an electric flux and a NC M9-brane with a magnetic flux. The former reduces in the critical electric flux limit to an M2-brane on the M9-brane, while the latter reduces in the strong magnetic flux limit to infinitely many Kaluza–Klein monopoles dissolved into the M9-brane. These NC M-branes are shown to preserve a half of 32 supersymmetries., Elsevier B.V.
Nuclear Physics B, 01 Feb. 2018, [Reviewed] - A note on supersymmetries in AdS 5/CFT 4
Fumiya Takeuchi; Makoto Sakaguchi, The = 4 superconformal algebra is derived from the symmetry transformations of fields in the = 4 SYM action in D = 4. We use a Majorana-Weyl spinor in D = 10 instead of four Weyl spinors in D = 4. This makes it transparent to relate generators of the = 4 superconformal algebra to those of the super-AdS5 ×S5 algebra. Especially, we obtain the concrete map from the supersymmetries Q and conformal supersymmetries S in = 4 SYM to the supersymmetries (1,2) in the AdS5 ×S5 background., World Scientific Publishing Co. Pte Ltd
Modern Physics Letters A, 20 Jan. 2018, [Reviewed] - 〔Major achievements〕D-branes from pure spinor superstring in AdS(5) x S-5 background
Sota Hanazawa; Makoto Sakaguchi, We examine the surface term for the BRST transformation of the open pure spinor superstring in an AdS(5) x S-5 background. We find that the boundary condition to eliminate the surface term leads to a classification of possible configurations of 1/2 supersymmetric D-branes. (C) 2016 The Author(s). Published by Elsevier B.V., ELSEVIER SCIENCE BV
NUCLEAR PHYSICS B, Jan. 2017, [Reviewed] - 〔Major achievements〕No pair production of open strings in a plane-wave background
Makoto Sakaguchi; Hyeonjoon Shin; Kentaroh Yoshida, We consider whether an external electric field may cause the pair production of open strings in a type IIA plane-wave background. The boundary states of D-branes with condensates are constructed in the Green-Schwarz formulation of superstring theory with the light-cone gauge. The cylinder diagrams are computed with massive theta functions. Although the value of the electric field is bounded by the upper value, there is no pole in the amplitudes and it indicates that no pair production occurs in the plane-wave background. This result would be universal for a class of plane-wave backgrounds., AMER PHYSICAL SOC
PHYSICAL REVIEW D, Sep. 2014, [Reviewed] - 〔Major achievements〕Supersymmetric Extensions of Non-Relativistic Scaling Algebras
Makoto Sakaguchi; Kentaroh Yoshida, An exciting subject in string theory is to consider some applications of the AdS/CFT correspondence to realistic systems like condensed matter systems. Since most of such systems are non-relativistic, an anisotropic scaling symmetry with the general value of dynamical critical exponent z plays an important role in constructing the gravity duals for non-relativistic field theories. Supersymmetric extensions of symmetry algebras including the anisotropic scaling are very helpful to consider holographic relations accurately. We give a short summary on the classification of super algebras with the anisotropic scaling as subalgebras of the following Lie superalgebras, psu(2,2 vertical bar 4), osp(8 vertical bar 4) and osp (8*vertical bar 4), which appear in the study of AdS/CFT in type IIB string and M theories. It contains supersymmetric extensions of Schrodinger algebra and Lifshitz algebra., MDPI AG
SYMMETRY-BASEL, Sep. 2012, [Reviewed] - Semi-classical brane in AdS-spaces
Makoto Sakaguchi, Lead, We briefly review a semi-classical analysis of static branes in AdS spaces. First, fluctuations of a 1/2 BPS F-string in AdS(5) x S-5 whose world-sheet extends along AdS(2) are examined. They are three massive and five massless scalars propagating in AdS(2). It is shown that they can reach the boundary to deform the Wilson line and so result in operator insertions in the Wilson line. We see that there exists SO(3) x SO(5) symmetry in both sides. Second, fluctuations of a D3-brane in AdS(5) x S-5 whose world-volume extends along AdS(2) x S-2 in AdS(5) are examined. They are six massless scalars and a U(1) gauge field propagating in AdS(2) x S-2. The spectrum on AdS2 is derived via a KK-reduction on S-2. Third, fluctuations of an M2-brane in AdS(4) x S-7/Z(k) whose world-volume extends along AdS(2) x S-1 is examined. After a KK-reduction on S-1, it is shown that for k = 1,2 the spectrum degenerates to form eight N = 1 scalar supermultiplets for each mu is an element of Z/2. Among them, sixteen bosonic fluctuations can reach the boundary., PROGRESS THEORETICAL PHYSICS PUBLICATION OFFICE
Prog.Theor.Phys.Suppl. 188 (2011) 187-196, 01 Jan. 2011 - Semiclassical analysis of M2-brane in AdS(4)xS(7)/Z(k)
Makoto Sakaguchi; Hyeonjoon Shin; Kentaroh Yoshida, We start from the classical action describing a single M2-brane on AdS(4)xS(7)/Z(k) and consider semiclassical fluctuaitions around a static, 1/2 BPS configuration whose shape is AdS(2)xS(1). The internal manifold S-7/Z(k) is described as a U(1) fibration over CP3 and the static configuration is wrapped on the U(1) fiber. Then the configuration is reduced to an AdS(2) world-sheet of type IIA string on AdS(4)xCP(3) through the Kaluza-Klein reduction on S-1. It is shown that the fluctuations form an infinite set of N = 1 supermultiplets on AdS(2) for k = 1, 2. The set is invariant under SO(8) which may be consistent with N = 8 supersymmetry on AdS(2). We discuss the behavior of the fluctuations around the boundary of AdS(2) and its relation to deformations of Wilson loop operator., SPRINGER
JOURNAL OF HIGH ENERGY PHYSICS, Dec. 2010, [Reviewed] - 〔Major achievements〕Super-Galilean conformal algebra in AdS/CFT
Makoto Sakaguchi, Galilean conformal algebra (GCA) is an Inonu-Wigner (IW) contraction of a conformal algebra, while Newton-Hooke string algebra is an IW contraction of an Anti-de Sitter (AdS) algebra, which is the isometry of an AdS space. It is shown that the GCA is a boundary realization of the Newton-Hooke string algebra in the bulk AdS. The string lies along the direction transverse to the boundary, and the worldsheet is AdS(2). The one-dimensional conformal symmetry so(2,1) and rotational symmetry so(d) contained in the GCA are realized as the symmetry on the AdS2 string worldsheet and rotational symmetry in the space transverse to the AdS(2) in AdS(d+2), respectively. It follows from this correspondence that 32 supersymmetric GCAs can be derived as IW contractions of superconformal algebras, psu(2,2 vertical bar 4), osp(8 vertical bar 4), and osp(8*vertical bar 4). We also derive less supersymmetric GCAs from su(2,2 vertical bar 2), osp(4 vertical bar 4), osp(2 vertical bar 4), and osp(8*vertical bar 2). (C) 2010 American Institute of Physics. [doi:10.1063/1.3321531], AMER INST PHYSICS
JOURNAL OF MATHEMATICAL PHYSICS, Apr. 2010, [Reviewed] - 〔Major achievements〕Non-Relativistic M2-brane Gauge Theory and New Superconformal Algebra
Yu Nakayama; Makoto Sakaguchi; Kentaroh Yoshida, We study non-relativistic limits of the N = 6 Chern-Simons-Matter theory that arises as a low-energy limit of the M2-brane gauge theory with background flux. The model admits several different non-relativistic limits and we find that the maximal supersymmetry we construct has 14 components of supercharges, which is a novel example of non-relativistic superconformal algebra in (1 + 2) dimension. We also investigate the other limits that realize less supersymmetries., SPRINGER
JHEP 0904 (2009) 096, 26 Apr. 2009, [Reviewed] - Interacting SUSY-singlet matter in non-relativistic Chern-Simons theory
Yu Nakayama; Makoto Sakaguchi; Kentaroh Yoshida, We construct an example of supersymmetric Chern-Simons-matter theory with a matter field transforming as a singlet representation of the supersymmetry algebra, where the bosonic and fermionic degrees of freedom do not match. This is obtained as a non-relativistic limit of the N = 2 Chern-Simons-matter theory in 1+2 dimensions, where the particle and anti-particle coexist. We also study the index to investigate the mismatch of bosonic and fermionic degrees of freedom., IOP PUBLISHING LTD
JOURNAL OF PHYSICS A-MATHEMATICAL AND THEORETICAL, Mar. 2009, [Reviewed] - A family of super Schrodinger invariant Chern-Simons matter systems
Yu Nakayama; Shinsei Ryu; Makoto Sakaguchi; Kentaroh Yoshida, We investigate non-relativistic limits of the N=3 Chern-Simons matter system in 1+2 dimensions. The relativistic theory can generate several inequivalent super Schodinger invariant theories, depending on the degrees of freedom we choose to retain in the non-relativistic limit. The maximally supersymmetric Schrodinger invariant theory is obtained by keeping all particle degrees of freedom. The other descendants, where particles and anti-particles coexist, are also Schrodinger invariant but preserve less supersymmetries. Thus, we have a family of super Schrodinger invariant field theories produced from the parent relativistic theory., SPRINGER
JHEP 0901:006,2009, 05 Jan. 2009, [Reviewed] - Spontaneous partial breaking of N=2 supersymmetry and the U(N) gauge model
Kazuhito Fujiwara; Hiroshi Itoyama; Makoto Sakaguchi, We briefly review properties of the N = 2 U(N) gauge model composed of N = 1 superfields. This model can be regarded as a low-energy effective action of A = 2 Yang-Mills theory equipped with electric and magnetic Fayet-Iliopoulos terms. In this model, the N = 2 supersymmetry is spontaneously broken to N = 1, and the Nambu-Goldstone fermion comes from the overall U(1) part of U(N) gauge group. We also give If = 1 supermultiplets appearing in the vacua. In addition, we give a manifestly N = 2 symmetric formulation of the model by employing the unconstrained N = 2 superfields in harmonic superspace. Finally, we study a decoupling limit of the Nambu-Goldstone fermion and identify the origin of the fermionic shift symmetry with the second, spontaneously broken supersymmetry., MATH SOC JAPAN
NONCOMMUTATIVITY AND SINGULARITIES: PROCEEDINGS OF FRENCH-JAPANESE SYMPOSIA HELD AT IHES IN 2006, 2009, [Reviewed] - Holography of non-relativistic string on AdS(5) x S**5
Makoto Sakaguchi; Kentaroh Yoshida, Lead, We review a holography of a non-relativistic (NR) string on AdS(5) x S-5. The NR string can be regarded as a semiclassical string around an AdS(2) classical solution, which corresponds to a straight Wilson line in the gauge-theory side. Non-normalizable modes of the NR string correspond to string fluctuations reaching the boundary, and cause small deformations of the Wilson line. The operator inserted on the Wilson line are found from the small deformation of the Wilson line. Normalizable modes, which exist in the Lorentzian case, are considered as wave functions in a conformal quantum mechanics., AMER INST PHYSICS
AIP Conf.Proc. 1078 (2009) 468-470, 23 Nov. 2008 - 〔Major achievements〕Super Schrodinger algebra in AdS/CFT
Makoto Sakaguchi; Kentaroh Yoshida, We discuss (extended) super-Schrodinger algebras obtained as subalgebras of the superconformal algebra psu(2,2 vertical bar 4). The Schrodinger algebra with two spatial dimensions can be embedded into so(4,2). In the superconformal case the embedded algebra may be enhanced to the so-called super-Schrodinger algebra. In fact, we find an extended super-Schrodinger subalgebra of psu(2,2 vertical bar 4). It contains 24 supercharges (i.e., 3/4 of the original supersymmetries) and the generators of so(6), as well as the generators of the original Schrodinger algebra. In particular, the 24 supercharges come from 16 rigid supersymmetries and half of 16 superconformal ones. Moreover, this superalgebra contains a smaller super-Schrodinger subalgebra, which is a supersymmetric extension of the original Schrodinger algebra and so(6) by eight supercharges (half of 16 rigid supersymmetries). It is still a subalgebra even if there are no so (6) generators. We also discuss super-Schrodinger subalgebras of the superconformal algebras, osp(8 vertical bar 4) and osp(8*vertical bar 4), and find super Schrodinger subalgebras in the same way. (C) 2008 American Institute of Physics. [DOI: 10.1063/1.2998205], AMER INST PHYSICS
JOURNAL OF MATHEMATICAL PHYSICS, Oct. 2008, [Reviewed] - 〔Major achievements〕More super Schrodinger algebras from psu(2,2|4)
Makoto Sakaguchi; Kentaroh Yoshida, Lead, We discuss super Schrodinger algebras with less supercharges from N=4 superconformal algebra psu(2, 2 vertical bar 4). Firstly N= 2 and N= 1 superconformal algebras are constructed from the psu(2, 2 vertical bar 4) via projection operators. Then a super Schrodinger subalgebra is found from each of them. The one obtained from N= 2 has 12 supercharges with su(2)(2) x u(1) and the other from N=1 has 6 supercharges with u(1)(3). By construction, those are still subalgebras of psu(2, 2 vertical bar 4). Another super Schrodinger algebra, which preserves 6 supercharges with a single u(1) symmetry, is also obtained from N=1 superconformal algebra su(2, 2 vertical bar 1). In particular, it coincides with the symmetry of N=2 non-relativistic Chern-Simons matter system in three dimensions., SPRINGER
JHEP 0808:049,2008, 13 Aug. 2008, [Reviewed] - Holography of non-relativistic string on AdS(5) x S-5
Makoto Sakaguchi; Kentaroh Yoshida, We briefly review a holography of non-relativistic (NR) string on AdS(5) x S-5. The NR string can be regarded as a semiclassical string around an AdS(2) classical solution corresponding to a straight Wilson line in the gauge-theory side. Exciting non-normalizable modes of the NR string gives source term insertions on the Wilson line. For normalizable modes we discuss a relation to a conformal quantum mechanics., WORLD SCIENTIFIC PUBL CO PTE LTD
INTERNATIONAL JOURNAL OF MODERN PHYSICS A, Jun. 2008, [Reviewed] - Holography of non-relativistic string on AdS(5) x S-5
Makoto Sakaguchi; Kentaroh Yoshida, We discuss a holographic dual of a non-relativistic (NR) string on AdS(5) x S-5. The NR string can be regarded as a semiclassical string around an AdS(2) classical solution corresponding to a straight Wilson line in the gauge-theory side. The quadratic action with respect to the fluctuations is composed of free massive and massless scalars, and free massive fermions on the AdS(2) world-sheet. We show that the complete agreement of the spectra between the NR string and a conformal quantum mechanics (CQM). Then we show a holographic relation between normalizable modes of the NR string and wave functions in the CQM. Then it may be argued from this result that an AdS(2)/CFT1 would be realized in AdS(5)/CFT4. We can really discuss a GKPW-type relation by considering non-normalizable modes of the NR string in Euclidean signature. Those modes give a source term insertion to the Wilson line, which can also be regarded as a small deformation of it., SPRINGER
JOURNAL OF HIGH ENERGY PHYSICS, Feb. 2008, [Reviewed] - A Semiclassical String Description of Wilson Loop with Local Operators
Makoto Sakaguchi; Kentaroh Yoshida
Nucl.Phys.B798:72-88,2008, 22 Jan. 2008, [Reviewed] - Noncommutative D-brane from Covariant AdS Superstring
Makoto Sakaguchi; Kentaroh Yoshida, Lead
Nucl.Phys.B797:179-198,2008, 11 Jan. 2008, [Reviewed] - Holography of Non-relativistic String on AdS(5) x S-5
Makoto Sakaguchi; Kentaroh Yoshida, We review a holography of a non-relativistic (NR) string on AdS(5) x S-5. The NR string can be regarded as a semiclassical string around an AdS(2) classical solution, which corresponds to a straight Wilson line in the gauge-theory side. Non-normalizable modes of the NR string correspond to string fluctuations reaching the boundary, and cause small deformations of the Wilson line. The operator inserted on the Wilson line are found from the small deformation of the Wilson line. Normalizable modes, which exist in the Lorentzian case, are considered as wave functions in a conformal quantum mechanics., AMER INST PHYSICS
SUPERSYMMETRY AND THE UNIFICATION OF FUNDAMENTAL INTERACTIONS, 2008, [Reviewed] - N=2 Quiver Gauge Model and Partial Supersymmetry Breaking
Hiroshi Itoyama; Kazunobu Maruyoshi; Makoto Sakaguchi
Nucl.Phys.B794:216-230,2008, 12 Nov. 2007, [Reviewed] - Progress of string theory and quantum field theory. Proceedings, International Conference, Osaka, Japan, December 7-10, 2007.
Int. J. Mod. Phys. A23 (2008) 2067-2351, 20 Jun. 2007, [Reviewed] - Non-relativistic string and D-branes on AdS(5) x S**5 from semiclassical approximation
Makoto Sakaguchi; Kentaroh Yoshida, Lead, We show that non-relativistic actions of strings and D-branes on AdS(5) x S-5 can be reproduced as a semiclassical approximation of the string and D-brane actions around static 1/2 BPS configurations. This is contrastive to the Penrose limit. For example, the pp-wave string can be recaptured as a semiclassical approximation around a 1/2 BPS particle rotating at the velocity of light. We argue that small deformation of a straight Wilson line would give a composite operator in the gauge-theory side that corresponds to a semiclassical state of the non-relativistic string, according to the semiclassical interpretation., SPRINGER
JHEP 0705:051,2007, 16 May 2007, [Reviewed] - Intersecting Noncommutative M5-branes from Covariant Open Supermembrane
Makoto Sakaguchi; Kentaroh Yoshida, Lead
Nucl.Phys.B781:85-98,2007, 16 May 2007, [Reviewed] - A Covariant Approach to Noncommutative M5-branes
Makoto Sakaguchi; Kentaroh Yoshida, Lead, We briefly review how to discuss noncommutative (NC) M5-branes and intersecting NC M5-branes from k-invariance of an open supermembrane action with constant three-form fluxes. The K-invariance gives rise to possible Dirichlet brane configurations. We shortly summarize a construction of projection operators for NC M5-branes and some intersecting configurations of NC M5-branes. A strong flux limit of them is also discussed., PROGRESS THEORETICAL PHYSICS PUBLICATION OFFICE
Prog.Theor.Phys.Suppl.171:275-278,2007, 01 May 2007, [Reviewed] - Spontaneous Partial Breaking of N=2 Supersymmetry and the U(N) Gauge Model
Kazuhito Fujiwara; Hiroshi Itoyama; Makoto Sakaguchi, Corresponding, We briefly review the properties of the N = 2 U(N) gauge model with/without matters. On the vacua, N = 2 supersymmetry and the gauge symmetry are spontaneously broken to N = 1 and a product gauge group, respectively. The masses of the supermultiplets appearing on the N = 1 vacua are given. We also discuss the relation to the matrix model., AMER INST PHYSICS
AIPConf.Proc.903:521-524,2007, 20 Apr. 2007 - Non-Relativistic AdS Branes and Newton-Hooke Superalgebra
Makoto Sakaguchi; Kentaroh Yoshida, Lead, We examine a non-relativistic limit of D-branes in AdS(5) x S-5 and M-branes in AdS(4/7) x S-7/4. First, Newton-Hooke superalgebras for the AdS branes are derived from AdS x S superalgebras as Inonu-Wigner contractions. It is shown that the directions along which the AdS-brane worldvolume extends are restricted by requiring that the isometry on the AdS-brane worldvolume and the Lorentz symmetry in the transverse space naturally extend to the super-isometry. We also derive Newton-Hooke superalgebras for pp-wave branes and show that the directions along which a brane worldvolume extends are restricted. Then the Wess-Zumino terms of the AdS branes are derived by using the Chevalley-Eilenberg cohomology on the super-AdS x S algebra, and the non-relativistic limit of the AdS-brane actions is considered. We show that the consistent limit is possible for the following branes: Dp (even, even) for p = 1 mod 4 and Dp (odd, odd) for p = 3 mod 4 in AdS(5) x S-5, and M2 (0,3), M2 (2,1), M5 (1,5) and M5 (3,3) in AdS(4) x S-7 and S-4 x AdS(7). We furthermore present non-relativistic actions for the AdS branes., SPRINGER
JHEP0610:078,2006, 27 Oct. 2006, [Reviewed] - Noncommutative M-branes from Covariant Open Supermembranes
Makoto Sakaguchi; Kentaroh Yoshida, Lead
Phys.Lett. B642 (2006) 400-403, 05 Oct. 2006, [Reviewed] - Notes on Five-dimensional Kerr Black Holes
Makoto Sakaguchi; Yukinori Yasui, Lead, The geometry of five-dimensional Kerr black holes is discussed based on geodesics and Weyl curvatures. Kerr-Stax space, Star-Kerr space and Kruskal space are naturally introduced by using special null geodesics. We show that the geodesics of AdS Kerr black hole axe integrable, which generalizes the result of Frolov and Stojkovic. We also show that five-dimensional AdS Kerr black holes are isospectrum deformations of Ricci-flat Kerr black holes in the sense that the eigenvalues of the Weyl curvature are preserved., WORLD SCIENTIFIC PUBL CO PTE LTD
Int.J.Mod.Phys. A21 (2006) 2331-2352, 30 Apr. 2006, [Reviewed] - Seven-dimensional Einstein Manifolds from Tod-Hitchin Geometry
Makoto Sakaguchi; Yukinori Yasui, Lead
J.Geom.Phys. 56 (2006) 2463-2479, 23 Feb. 2006, [Reviewed] - Partial supersymmetry breaking and N=2 U(N(c)) gauge model with hypermultiplets in harmonic superspace
Kazuhito Fujiwara; Hiroshi Itoyama; Makoto Sakaguchi, Corresponding
Nucl.Phys.B740:58-78,2006, 09 Feb. 2006, [Reviewed] - Non-relativistic AdS branes
Makoto Sakaguchi; Kentaroh Yoshida, • NH superalgebras of branes in AdS5 × S5 and AdS4/7 × S7/4 - IW contraction of psu(2
2|4) and osp(8(*)|4) - sub-superalgebra as super symmetrization of brane worldvolume isometry and transverse Lorentz symmetry. - classification of 1/2 supersymmetric subspaces ⊃ 1/2 BPS branes • Non-relativistic AdS brane actions - consistent limit can be performed for 1/2 BPS AdS branes - in flat limit they reproduce non-relativistic brane actions in flat spacetime comments on M-branes • Newton-Hooke superalgebras of M-branes in AdS 4/7 × S7/4 IW contraction of osp(8|4) or osp(8 *|4) (Table Presented) p-branes with p = 1 mod 4 are 1/2 BPS Dirichlet branes of open supermembrane [Yoshida-MS'0310,'0405]
brane probe analysis [Kim-Yee'0211] • 2- and 5-branes admit consistent non-relativistic limit. - M2- and M5-brane actions are characterized as non-trivial elements of CE cohomology on osp(8|4) or osp(8*|4). - M2- and M5-branes admit consistent non-relativistic limit, and derived nonrelativistic AdS M-brane actions reproduce the non-relativistic M2-brane action [Gomis-Kamimura- Townsend'0409] and the linearized M5-brane action [Claus-Kallosh-Van Proeyen'9711] in flat limit., American Physical Society
Annual Meeting of the Division of Particles and Fields of the American Physical Society, DPF 2006, and the Annual Fall Meeting of the Japan Particle Physics Community, 2006 - Supersymmetric U(N) Gauge Model and Partial Breaking of N=2 Supersymmetry
Kazuhito Fujiwara; Hiroshi Itoyama; Makoto Sakaguchi, Corresponding, We review the construction of the N = 2 U(N) gauge model and the analysis of vacua of the model. On the vacua, N = 2 supersymmetry is spontaneously broken to N = 1, and the gauge symmetry is broken to a product gauge group Pi(n)(i=1) U(N-i). The masses of the supermultiplets appearing on the N = 1 vacua are given. We provide a manifestly N = 2 supersymmetric formulation of the U(N) gauge model coupled with N = 2 hypermultiplets, and show that N = 2 supersymmetry is partially broken down to N = 1 spontaneously., PROGRESS THEORETICAL PHYSICS PUBLICATION OFFICE
Prog.Theor.Phys.Suppl.164:125-137,2007, 01 Jan. 2006 - Scalar Laplacian on Sasaki-Einstein manifolds Y-p,Y-q
H Kihara; M Sakaguchi; Y Yasui, We study the spectrum of the scalar Laplacian on the five-dimensional toric Sasaki-Einstein manifolds Y-p,Y-q. The eigenvalue equation reduces to Heun's equation, which is a Fuchsian equation with four regular singularities. We show that the ground states, which are given by constant solutions of Heun's equation, are identified with BPS states corresponding to the chiral primary operators in the dual quiver gauge theories. The excited states correspond to non-trivial solutions of Henn's equation. It is shown that these reduce to polynomial solutions in the near BPS limit. (c) 2005 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
PHYSICS LETTERS B, Aug. 2005, [Reviewed] - Partial Breaking of N=2 Supersymmetry and of Gauge Symmetry in the U(N) Gauge Model
Kazuhito Fujiwara; Hiroshi Itoyama; Makoto Sakaguchi
Nucl.Phys. B723 (2005) 33-52, 12 Jul. 2005, [Reviewed] - Scalar Laplacian on Sasaki-Einstein Manifolds Y^{p,q}
Hironobu Kihara; Makoto Sakaguchi; Yukinori Yasui, Corresponding, Soryushiron Kenkyu Editorial Office
Phys.Lett. B621 (2005) 288-294, 29 Jun. 2005, [Reviewed] - Open M-branes on AdS(4/7) x S**7/4 revisited
Makoto Sakaguchi; Kentaroh Yoshida, Lead
Nucl.Phys. B714 (2005) 51-66, 19 Mar. 2005, [Reviewed] - Supersymmetric U(N) Gauge Model and Partial Breaking of N=2 Supersymmetry
Kazuhito Fujiwara; Hiroshi Itoyama; Makoto Sakaguchi, Corresponding, Guided by the gauging of U(N) isometry, associated with the special Kahler geometry, and the discrete R symmetry, we construct the N = 2 supersymmetric action of a U(N) invariant nonabelian gauge model in which rigid N = 2 supersymmetry is spontaneously broken to N = 1. This generalizes the abelian model considered by Antoniadis, Partouche and Taylor. We shed light on complexity of the supercurrents of our model associated with a broken N = 2 supermultiplet of currents, and discuss the spontaneously broken supersymmetry as an approximate fermionic shift symmetry., PROGRESS THEORETICAL PHYSICS PUBLICATION OFFICE
Prog.Theor.Phys. 113 (2005) 429-455, Feb. 2005, [Reviewed] - New Infinite Series of Einstein Metrics on Sphere Bundles from AdS Black Holes
Yoshitake Hashimoto; Makoto Sakaguchi; Yukinori Yasui, Corresponding, Soryushiron Kenkyu Editorial Office
Commun.Math.Phys. 257 (2005) 273-285, 25 Nov. 2004, [Reviewed] - Sasaki-Einstein Twist of Kerr-AdS Black Holes
Yoshitake Hashimoto; Makoto Sakaguchi; Yukinori Yasui
Phys.Lett. B600 (2004) 270-274, 11 Sep. 2004, [Reviewed] - Notes on D-branes of Type IIB String on AdS_5 x S^5
Makoto Sakaguchi; Kentaroh Yoshida, Lead
Phys.Lett. B591 (2004) 318-324, 13 May 2004, [Reviewed] - Uniqueness of M-theory PP-Wave Background with Extra Supersymmetries
Nobuyoshi Ohta; Makoto Sakaguchi, Corresponding, We examine Killing spinor equations of the general eleven-dimensional pp-wave backgrounds, which contain a scalar [Formula Presented] in the metric and a three-form [Formula Presented] in the flux. Considering nonharmonic extra Killing spinors, we show that, if the backgrounds admit at least one extra Killing spinor in addition to the standard 16 Killing spinors, they can be reduced to the form with [Formula Presented] and [Formula Presented] modulo coordinate transformations. We further examine the cases in which the extra Killing spinor is characterized by a set of Cartan matrices. The superisometry algebras of the resulting backgrounds are also derived. © 2004 The American Physical Society.
Phys.Rev. D69 (2004) 066006, 22 Mar. 2004, [Reviewed] - Uniqueness of M-theory pp-wave background with extra super-symmetries
N Ohta; M Sakaguchi, We examine Killing spinor equations of the general eleven-dimensional pp-wave backgrounds, which contain a scalar H(x(m), x(-)) in the metric and a three-form xi(x(m), x(-)) in the flux. Considering nonharmonic extra Killing spinors, we show that, if the backgrounds admit at least one extra Killing spinor in addition to the standard 16 Killing spinors, they can be reduced to the form with H=A(mn) (x(-))x(m)x(n) and xi(x(-)) modulo coordinate transformations. We further examine the cases in which the extra Killing spinor is characterized by a set of Cartan matrices. The superisometry algebras of the resulting backgrounds are also derived., AMER PHYSICAL SOC
PHYSICAL REVIEW D, Mar. 2004, [Reviewed] - D-branes of Covariant AdS Superstrings
Makoto Sakaguchi; Kentaroh Yoshida, Lead, We consider D-branes of open superstrings in the AdS(5) x S-5 background. The possible configurations of D-branes preserving half of supersymmetries are classified by analyzing the kappa-invariance of an open superstring in a covariant manner. We also revisit the classification of D-branes in the pp-wave background. It is shown that Penrose limits of the possible D-branes in the AdS(5) x S-5 dive all of the D-branes in the pp-wave. In addition, a 1/4 supersymmetric, D-string, which is related to the D-string preserving 8 dynamical supersymmetries in the pp-wave, is presented. We also discuss the relation between our result and the Ads branes in a brane probe analysis. (C) 2004 Elsevier B.V. All rights reserved., ELSEVIER SCIENCE BV
Nucl.Phys. B684 (2004) 100-124, 13 Feb. 2004, [Reviewed] - Dirichlet Branes of the Covariant Open Supermembrane in AdS_4 x S^7 and AdS_7 x S^4
Makoto Sakaguchi; Kentaroh Yoshida, Lead
Nucl.Phys. B681 (2004) 137-151, 12 Jan. 2004, [Reviewed] - D-branes of Covariant AdS Superstrings -- An Overview --
Makoto Sakaguchi; Kentaroh Yoshida, Lead
SUSY 2004, 2004 - U(N) Gauge Model and Partial Breaking of N=2 Supersymmetry
Kazuhito Fujiwara; Hiroshi Itoyama; Makoto Sakaguchi, Corresponding
Proceedings of the 12th International Conference on Supersymmetry and Unification of the Fundamental Interactions (SUSY2004), 2004, [Reviewed] - M-theory on a Time-dependent Plane-wave
Makoto Sakaguchi; Kentaroh Yoshida, Lead, We propose a matrix model on a homogeneous plane-wave background with 20 supersymmetries. This background is anti-Mach type and is related to the time-dependent plane-wave background. We study supersymmetries of this matrix model. The vacuum energy of the abelian part is also calculated. In addition we find classical solutions such as graviton solution, fuzzy sphere and hyperboloid., SPRINGER
JHEP 0311 (2003) 030, 13 Nov. 2003, [Reviewed] - Dirichlet Branes of the Covariant Open Supermembrane on a PP-wave Background
Makoto Sakaguchi; Kentaroh Yoshida, Lead
Nucl.Phys. B676 (2004) 311-324, 17 Oct. 2003, [Reviewed] - Wess-Zumino term for the AdS superstring and generalized Inonu-Wigner contraction
Machiko Hatsuda; Makoto Sakaguchi, We examine a Wess-Zumino term, written in a form of bilinear in superinvariant currents, for a superstring in anti-de Sitter (AdS) space, and derive a procedure for obtaining the correct flat limit. The standard Inonu-Wigner contraction does not give the correct flat limit but, rather, gives zero. This erroneous result originates from the fact that the fermionic metric of the super-Poincare group is degenerate. We propose a generalization of the Inonu-Wigner contraction from which a "nondegenerate" super-Poincare group is derived from the super-AdS group. For this reason, this contraction gives the correct flat limit of this Wess-Zumino term. We also discuss the M-algebra obtained using this generalized Inonu-Wigner contraction from osp(1/32)., PROGRESS THEORETICAL PHYSICS PUBLICATION OFFICE
Prog.Theor.Phys. 109 (2003) 853-867, May 2003, [Reviewed] - osp(1|32) and Extensions of super-AdS_5 X S^5 algebra
Kiyoshi Kamimura; Makoto Sakaguchi, Corresponding
Nucl.Phys. B662 (2003) 491-510, 08 Apr. 2003, [Reviewed] - Gauge invariant action for superstring in Ramond-Ramond plane-wave background
Machiko Hatsuda; Kiyoshi Kamimura; Makoto Sakaguchi
Nucl.Phys. B644 (2002) 40-64, 29 Aug. 2002, [Reviewed] - Wess-Zumino term for AdS superstring
Machiko Hatsuda; Makoto Sakaguchi, We examine a bilinear form Wess-Zumino term for a superstring in anti–de Sitter (AdS) spaces. This is composed of two parts: a bilinear term in superinvariant currents and a total derivative bilinear term which is required for the pseudosuperinvariance of the Wess-Zumino term. The covariant supercharge commutator containing a string charge is also obtained. © 2002 The American Physical Society.
Phys.Rev. D66 (2002) 045020, 15 Aug. 2002, [Reviewed] - Super-PP-wave Algebra from Super-AdS x S Algebras in Eleven-dimensions
Machiko Hatsuda; Kiyoshi Kamimura; Makoto Sakaguchi, Corresponding, Maximally supersymmetric spacetime algebras in eleven dimensions, which are the isometry superalgebras of Minkowski space, AdS7 × S4, AdS4 × S7 and pp-wave background, are related by Inönü-Wigner contractions. The super-AdS4(7) × S7(4) algebras allow to introduce two contraction parameters, the one for the flat limit to the super-Poincaré algebra and the other for a Penrose limit to the super-pp-wave algebra. Under these contractions supersymmetries are maintained because the Jacobi identity of three supercharges holds for any values of contraction parameters. © 2002 Elsevier Science B.V. All rights reserved.
Nucl.Phys. B637 (2002) 168-176, 05 Jun. 2002, [Reviewed] - From Super-AdS_5xS^5 Algebra to Super-pp-wave Algebra
Machiko Hatsuda; Kiyoshi Kamimura; Makoto Sakaguchi
Nucl.Phys. B632 (2002) 114-120, 22 Mar. 2002, [Reviewed] - Open Superstring Theory and Superalgebra of the Brane Antibrane System
Machiko Hatsuda; Makoto Sakaguchi
Nucl.Phys. B599 (2001) 185-196, 29 Dec. 2000, [Reviewed] - Nondegenerate Super-Anti-de Sitter Algebra and a Superstring Action
Machiko Hatsuda; Kiyoshi Kamimura; Makoto Sakaguchi, We construct an anti–de Sitter (AdS) algebra in a nondegenerate superspace. Based on this algebra we construct a covariant kappa-symmetric superstring action, and we examine its dynamics: Although this action reduces to the usual Green-Schwarz superstring action in a flat limit, the auxiliary fermionic coordinates of the nondegenerate superspace become dynamical in the AdS background. © 2000 The American Physical Society.
Phys.Rev. D62 (2000) 105024, 23 Oct. 2000, [Reviewed] - IIB-Branes and New Spacetime Superalgebras
Makoto Sakaguchi, Lead, We provide a classification of the IIB Dp- and NSp-branes in which the brane action exists due to a non-trivial class of the Chevalley-Eilenberg cohomology of free differential algebras. We then present a new geometric formulation of the IIB Dp- and NSp-branes (p less than or equal to 5) in which the manifestly superinvariant Wess-Zumino terms are constructed in terms of the supersymmetric currents. The supercurrents are obtained by using supergroup manifolds corresponding to the IIB-brane superalgebra, which is characterized by the generators of D3-, D5-, NS5- and KK5-branes in addition to the previously introduced generators of supertranslations, F- and D-strings. The charges of D1-, F1- and D3-branes are related to those of the M-algebra, but some charges of D5- and NS5-branes are not. The S-duality of the type-IIB theory is realized as transformations of the supercurrents generalizing the SO(2) R-symmetry of the superalgebra. We thus find that the superalgebra is lifted into twelve-dimensions with signature (11,1)., SPRINGER
JHEP 0004 (2000) 019, Apr. 2000, [Reviewed] - BPS states carrying fermionic brane charges
Machiko Hatsuda; Makoto Sakaguchi, The Green-Siegel central extension of superalgebras for BPS branes is studied. In these cases commutators of usual bosonic brane charges only with the broken supersymmetry charges allow this central extension. We present an interpretation of these fermionic central charges as fermionic brane charges, and show that they take nonzero values for a nontrivial fermionic boundary condition. Such fermionic coordinates solutions are determined by equations of motion in a suitable gauge condition which manifests Nambu-Goldstone fermionic modes as well as bosonic modes in the static gauge. We also show that some modes of dilatino fields couple with the fermionic brane currents. © 2000 Elsevier Science B.V., Elsevier
Nucl.Phys. B577 (2000) 183-193, Feb. 2000, [Reviewed] - (p,q)-strings and New Spacetime Superalgebras
M. Sakaguchi, Lead
JHEP 9902:017,1999, Feb. 1999, [Reviewed] - Type-II Superstrings and New Spacetime Superalgebras
M. Sakaguchi, Lead, We present a geometric formulation of type-IIA and -IIB superstring theories in which the Wess-Zumino term is second order in the supersymmetric currents. The currents are constructed using supergroup manifolds corresponding to superalgebras: the type-IIA superalgebra derived from M algebra and the type-IIB superalgebra obtained by a T-duality transformation of the type-IIA superalgebra. We find that a slight modification of the type-IIB superalgebra is needed to describe D-string theories, in which the U(1) gauge field on the world sheet is explicitly constructed in terms of D-string charges. A unification of the superalgebras in a (Formula presented)-dimensional (Formula presented) superalgebra is discussed too. © 1999 The American Physical Society.
Phys.Rev.D59:046007,1999, 27 Jan. 1999, [Reviewed] - (0,2) Calabi-Yau sigma models and their duality
Makoto Sakaguchi, Lead, N = (0, 2) heterotic string theories on Calabi-Yau spaces are considered based on linear sigma approaches. We construct (0,2) sigma models on complete intersection Calabi-Yau spaces, M, realized in a product of weighted projective spaces. The definition of the associating vector bundle V over M is given. These models are formulated as the IR limits of (0,2) U(1)(N) gauged linear sigma models. Examining their phase structures, we observe that there are hybrid phases where one cannot intrinsically distinguish between the defining polynomials of the Calabi-Yau space M and those of the gauge bundle V. Thus we construct dual pairs of two (0,2) Calabi-Yau sigma models which are isomorphic in their hybrid phases. In addition, generalizing the gauge bundle into the direct sum of bundles, we study the duality of (0,2) string vacua., WORLD SCIENTIFIC PUBL CO PTE LTD
Int.J.Mod.Phys. A13 (1998) 779-796, 1998, [Reviewed] - Four-Dimensional N=2(4) Superstring Backgrounds and The Real Heavens
Makoto SAKAGUCHI, Lead, We study N = 2 superstring backgrounds which are four-dimensional, non-Kahlerian and contain nontrivial dilaton and torsion fields. In particular we consider the case where the backgrounds possess at least one U(1) isometry and are characterized by the continual Toda equation and the Laplace equation. We obtain a string background associated with a nontrivial solution of the continual Toda equation, which is mapped, under the T duality transformation, to the Taub-NUT instanton background. It is shown that the integrable property of the non-Kahlerian spaces has a direct origin in the real heavens: real, self-dual, Euclidean, Einstein spaces. The Laplace equation and the continual Toda equation imposed on quasi-Kahler geometry for consistent string propagation are related to the self-duality conditions of the real heavens with ''translational'' and ''rotational'' Killing symmetry respectively., WORLD SCIENTIFIC PUBL CO PTE LTD
Int.J.Mod.Phys. A11 (1996) 1279-1298, 1996, [Reviewed] - A Universal w String Theory
Hiroshi Kunitomo; Makoto Sakaguchi; Akira Tokura, It has been shown that there is a sequential embedding structure in a omega(N) string theory based on a linearized W-N algebra. The omega(N) string theory is obtained as a special realization of the omega(N+1) string. The omega(infinity) string theory is a universal string theory in this sense. We have also shown that there is a similar sequence for N = 1 string theory. The N = 1 omega(N) string can be given as a special case of the N = 1 omega(N+1) string. In addition, we show that the omega(3) string theory is obtained as a special realization of the N = 1 omega(3) string. We conjecture that the omega(N) string can be obtained as a special N = 1 omega(N) string for general omega(N). If this is the case, the N = 1 omega(infinity) string theory is more universal since it includes both N = 0 and N = 1 omega(N) string theories., WORLD SCIENTIFIC PUBL CO PTE LTD
Int.J.Mod.Phys. A10 (1995) 827-844, 1995, [Reviewed] - A Hierarchy of Super w Strings
Hiroshi Kunitomo; Makoto Sakaguchi; Akira Tokura, It is shown that the N-extended super w(n) string can be obtained asa special class of vacua of both the N-extended super w(n+1) string and the (N+1)-extended super w(n) string. This hierarchy of super w string theories includes as subhierarchies both the superstring hierarchy given by Bastianelli, Ohta and Petersen and the w string hierarchy given by the authors., KYOTO UNIV
Prog.Theor.Phys. 92 (1994) 1019-1032, Nov. 1994, [Reviewed] - BRST Analysis of Physical States in Two-Dimensional Black Hole
Katsumi Itoh; Hiroshi Kunitomo; Nobuyoshi Ohta; Makoto Sakaguchi, We study the BRST cohomology for an SL(2, R)/U(1) coset model, which describes an exact string black hole solution. It is shown that the physical spectrum could contain not only the extra discrete states corresponding to those in c = 1 two-dimensional gravity but also many additional new states with a ghost number N(FP) = -1 to 2. We also discuss characters for nonunitary representations and the relation of our results to other approaches., AMER PHYSICAL SOC
Phys.Rev. D48 (1993) 3793-3808, 15 Oct. 1993, [Reviewed] - BRST analysis of physical states in a two-dimensional black hole
Katsumi Itoh; Hiroshi Kunitomo; Nobuyoshi Ohta; Makoto Sakaguchi, We study the BRST cohomology for an SL(2,R)U(1) coset model, which describes an exact string black hole solution. It is shown that the physical spectrum could contain not only the extra discrete states corresponding to those in c=1 two-dimensional gravity but also many additional new states with a ghost number NEP=-1 to 2. We also discuss characters for nonunitary representations and the relation of our results to other approaches. © 1993 The American Physical Society.
Physical Review D, 1993
MISC
Lectures, oral presentations, etc.
- Chan-Paton 因子としての境界フェルミオン
藤井僚太; 阪口真
日本物理学会 2025 年春季大会, 18 Mar. 2025
20250318, 20250321 - AdS5×S5時空でのDブレーン上の背景超場とPure Spinor超弦の結合
藤井僚太; 阪口真
日本物理学会 第79回年次大会（2024年）, 17 Sep. 2024
20240916, 20240920 - pure spinor超弦から誘導された超対称非可換DBI方程式のゲージ群が、\alpha'\simO(1)のとき、\otimes_{k=0}^{q}U(_qC_k)であることを示す
藤井僚太,初田真知子,金久発,阪口真
日本物理学会 2024年春季大会, Mar. 2024
20240318, 20240321 - ピュアスピナー超弦を用いて導かれたDBI方程式の検証
金久発、藤井僚太、阪口真
日本物理学会 第78回年次大会（2023年）, Sep. 2023
20230916, 20230919 - ピュアスピナー超弦から得られる超対称非可換DBI方程式とMyers作用について
金久発、藤井僚太、阪口真
日本物理学会 2023年春季大会, 22 Mar. 2023
20230322, 20230325 - 超対称非可換DBI方程式とマイヤーズ効果
金久発; 藤井僚太; 花澤聡太; 阪口真
日本物理学会 2022年秋季大会, 07 Sep. 2022
20220906, 20220908 - Pure Spinor超弦による非可換DBI方程式の導出と境界フェルミオンの扱い
藤井僚太; 花澤聡太; 金久発; 阪口真
日本物理学会 2022年秋季大会, 07 Sep. 2022 - Supersymmetric non-abelian DBI equations in diverse dimensions from the BRS invariance of a pure spinor superstring
金久発,花澤聡太,阪口真
日本物理学会 第77回年次大会, 17 Mar. 2022
20220315, 20220319 - ピュアスピナー形式を用いた超対称非可換DBI方程式
金久発,花澤聡太,阪口真
日本物理学会 第77回年次大会, 17 Mar. 2022
20220315, 20220319 - BRST 反場形式でのボゾン的高階スピンゲージ場の相互作用の構成
藤井僚太,金久発,阪口真,鈴木晴侯
日本物理学会 2021年秋季大会, 17 Sep. 2021 - BRST 反場形式を用いたフェルミオン的高階スピンゲージ場の相互 作用の構成とその AdS 空間への拡張
金久発,藤井僚太,阪口真,鈴木晴侯
日本物理学会 2021年秋季大会, 17 Sep. 2021 - BRST反場形式での高階スピンゲージ理論の相互作用頂点の解析
鈴木晴侯; 阪口真
日本物理学会 2020年秋季大会, 17 Sep. 2020 - 高階スピンゲージ理論のBRST不変な四点相互作用頂点
鈴木晴侯; 阪口真
日本物理学会2020年春季大会, 16 Mar. 2020 - Cubic vertices for massless higher spin gauge fields in AdS spaces
Haruya Suzuki (presenter) and Makoto Sakaguchi
KEK Theory workshop 2019, 05 Dec. 2019, KEK - Cubic interaction vertices of bosonic higher spin fields in BRST-BV formalism
Haruya Suzuki (presenter) and Makoto Sakaguchi
The 29th Workshop on General Relativity and Gravitation in Japan, 27 Nov. 2019, Kobe University - Pure Spinor形式による非Abel的超対称Dirac-Born-Infeld方程式
花澤 聡太; 阪口真
日本物理学会 2019年秋季大会, 19 Sep. 2019 - AdS空間上の高階スピンゲージ理論のBRST不変な三点相互作用頂点
鈴木晴侯; 阪口真
日本物理学会 2019年秋季大会, 19 Sep. 2019 - Cubic interaction vertices of bosonic higher spin fields in BRST-BV formalism
Haruya Suzuki (presenter) and Makoto Sakaguchi
YITP Workshop Strings and Fields 2019, 22 Aug. 2019, Yukawa Institute for Theoretical Physics, Kyoto University, Kyoto, Japan - Dirac-Born-Infeld equations from BRST-invariance of pure spinor superstring
Makoto Sakaguchi
The 2nd Workshop on "Mathematics and Physics in General Relativity", 23 Mar. 2019, [Invited] - AdS空間上の高階スピンゲージ理論の反場を含んだ作用について
鈴木晴侯; 阪口真
日本物理学会 第74回年次大会, 17 Mar. 2019 - Plane-wave背景上の超弦理論のdouble spinor形式
花澤聡太; 阪口真
日本物理学会2018年秋季大会, 15 Sep. 2018 - 無質量高階スピンゲージ理論の反場を含んだBRST不変な作用
鈴木晴侯; 阪口真
日本物理学会2018年秋季大会, 15 Sep. 2018 - Pure Spinor形式におけるBRS電荷保存則から導くDブレーン方程式
花澤聡太; 阪口真
日本物理学会第73回年次大会(2018年), 25 Mar. 2018 - Pure spinor形式による非可換Mブレーンの解析
花澤聡太; 阪口真
日本物理学会2017年秋大会, 14 Sep. 2017 - BRSTゲージ固定された4次元N=4 SYM理論の超共形カレント
竹内郁也; 阪口真
日本物理学会2017年秋大会, 12 Sep. 2017 - Dirichlet-branes from BRST invariance in Pure Spinor formalism
Makoto Sakaguchi
Progress in Quantum Field Theory and String Theory II, Mar. 2017, [Invited] - Pure Spinor 超弦理論によるAdS5xS5時空上のDブレーンの解析
花澤聡太; 阪口真
日本物理学会2016年秋季大会, 22 Sep. 2016 - ABJM模型の共形超対称性とnear-horizon極限での対称性の拡大
竹内郁也; 阪口真
日本物理学会2016年秋季大会, 22 Sep. 2016 - 4D N=4 superconformal algebra and symmetry enhancement in near-horizon limit
竹内郁也; 阪口真
日本物理学会2015年秋季大会, 27 Sep. 2015, 日本物理学会 - Superalgebra with Non-Relativistic Scale Invariance
阪口真
日本物理学会2012年秋季大会, 14 Sep. 2012, 日本物理学会 - Holography of dual giant Wilson loop II
Makoto Sakaguchi; Kentaroh Yoshida
日本物理学会 2011年秋季大会, Sep. 2011, 日本物理学会 - Holography of dual giant Wilson loop
Makoto Sakaguchi; Kentaroh Yoshida
日本物理学会 第66回年次大会, Mar. 2011, 日本物理学会 - Semi-classical brane in AdS spaces
The 3rd international conference on string field theory and related topics, Oct. 2010 - World-volume description of dual giant Wilson loop
日本物理学会 2010年秋季大会, Sep. 2010 - Semiclassical Analysis of M2-brane in AdS4 x S7/Zk
日本物理学会 第65回年次大会, Mar. 2009 - Super Schröinger invariant field theories
Sapporo Winter School 2009, 08 Jan. 2009 - Holography of non-relativistic string on AdS5 x S5
SUSY2008, 21 Jun. 2008 - Holography of non-relativistic string on AdS5 x S5
International workshop ``Progress of String Theory and Quantum Field Theory,", Dec. 2007 - Non-relativistic AdS Branes
The Joint Meeting of Pacific Region Particle Physics Communities, 31 Oct. 2006
Courses
- Quantum Mechanics II
2023 - Present
Ibaraki University - Apr. 2020 - Present
茨城大学 - Apr. 2016 - Present
茨城大学 - Apr. 2014 - Present
茨城大学 - Sep. 2022 - Mar. 2023
茨城大学 - Apr. 2017 - Mar. 2021
茨城大学 - Apr. 2015 - Mar. 2020
茨城大学 - Apr. 2015 - Mar. 2018
茨城県立中央看護専門学校 - Apr. 2014 - Mar. 2018
茨城大学 - Apr. 2012 - Mar. 2017
茨城大学 - Apr. 2012 - Mar. 2014
茨城大学 - Apr. 2012 - Mar. 2014
茨城大学 - 2012 - 2014
茨城大学 - Apr. 2010 - Mar. 2012
日本大学理工学部 - Apr. 2010 - Mar. 2012
成蹊大学理工学部 - Aug. 2011
慶應義塾大学通信教育課程 - Apr. 1999 - Sep. 2000
同志社女子大学
Research Themes
- BRST形式による弦の有効理論の研究
Grant-in-Aid for Scientific Research(C)
Apr. 2021 - Mar. 2026 - 超弦理論の研究
Apr. 2022 - Mar. 2025 - Combinatorics of Fano varieties and its application to Sasaki-Einstein manifolds
Grant-in-Aid for Scientific Research (C)
Osaka City University
2007 - 2010 - Geometric formulation of spontaneous symmetry breaking
Grant-in-Aid for Scientific Research (C)
Okayama Institute for Quantum Physics
2007 - 2009 - Geometry of Black Hole and Sasaki-Einstein Metric
Grant-in-Aid for Scientific Research (C)
Osaka City University
2007 - 2008 - Geometry of Higher Dimensional Black Hole and Compact Einstein Space
Grant-in-Aid for Scientific Research (C)
Osaka City University
2005 - 2006 - Geometry of Higher Dimensional Black Hole and Compact Einstein Space
Grant-in-Aid for Scientific Research (C)
Osaka City University
2005 - 2006 - Reconstruction of twistor theory based on combinatorics of Fano varieties
Grant-in-Aid for Scientific Research (C)
Osaka City University
2005 - 2006
