Talk Title 反物質で探る時空の構造と物質の起源
Speaker Makoto Fujiwara (TRIUMF, Vancouver)
Time & Location , Room 458
Abstract
Reference(s)

Talk Title Spherical M5-branes from the plane wave matrix model
Speaker Goro Ishiki (Tsukuba U.)
Time & Location , Room 458
Abstract The plane wave matrix model (PWMM) is conjectured to give a formulation of the M-theory on the pp-wave background. In the M-theory, there exist spherical M5-branes with vanishing light cone energy. If the matrix model formulation of the M-theory is correct, these M5 branes should be somehow realized in PWMM. Using the localization, we show that such spherical branes are indeed realized in PWMM as the eigenvalue distribution of the SO(6) scalar fields. We also show that the radius of the distribution exactly agrees with the radius of the M5-branes.
Reference(s)

Talk Title Renormalization Group Equation and scaling solutions for $f(R)$ gravity in exponential parametrization
Speaker Nobuyoshi Ohta (Kindai U., Osaka)
Time & Location , Room 458
Abstract After reviewing motivations, we discuss a functional flow equation for the gravitational effective average action in an $f(R)$ truncation using the exponential parametrization of the metric. The background metric is a four-sphere and the coarse-graining procedure contains three free parameters. We look for scaling solutions, i.e. non-Gaussian fixed points for the function $f$. For a discrete set of values of the parameters, we find simple global solutions of quadratic polynomial form. For other values, global solutions can be found numerically. We also discuss future perspective in this approach to quantum gravity.
Reference(s) arXiv:1511.09393 [hep-th]

Talk Title Complete action of open superstring field theory
Speaker Yuji Okawa (Tokyo U., Komaba)
Time & Location , Room 458
Abstract In formulating superstring field theory, construction of an action including the Ramond sector has not been successful for about thirty years, and this has been a major obstacle. This August we finally succeeded in constructing a gauge-invariant action of open superstring field theory including both the Neveu–Schwarz sector and the Ramond sector. This is the first construction of a complete formulation of superstring field theory. In this talk, we explain the construction of the complete action without assuming any background on string field theory. The talk is based on the paper arXiv:1508.00366 in collaboration with Kunitomo.
Reference(s) arXiv:1508.00366 [hep-th]

Talk Title 零質量高階スピン場を持つ拡張された弦の場の理論
Speaker Masako Asano (Seikei U.)
Time & Location , Room 458
Abstract
Reference(s)

Talk Title Introduction to Complex Quantum Theories
Speaker Bhabani Prasad Mandal (Banaras Hindu U.)
Time & Location , Room 458
Abstract It is possible to formulate a consistent quantum theories with the Hamiltonians which are not self adjoint rather respect certain discrete symmetries. In this talk I will give a long introduction of such theories and discuss few applications of such theories. Further I will discuss how such a complex extension is useful in various branches of physics.
Reference(s)

Talk Title Probing High-scale SUSY models using flavor observables
Speaker Minoru Nagai (Kyoto Sangyo U.)
Time & Location , Room 458
Abstract
Reference(s) arXiv:1305.7357 [hep-ph]

Talk Title Statistical Mechanics without Ensembles—Thermal Pure Quantum Formulation
Speaker Akira Shimizu (Tokyo U.)
Time & Location , Room 458
Abstract
Reference(s) arXiv:1112.0740 [cond-mat.stat-mech], arXiv:1302.3138 [cond-mat.stat-mech], 日本物理学会誌70(5), 368-373, 2015

Talk Title Random volumes from matrices
Speaker Sotaro Sugishita (Kyoto U.)
Time & Location , Room 458
Abstract
Reference(s) arXiv:1503.08812 [hep-th]

Talk Title 解ける量子力学模型と例外直交多項式
Speaker Satoru Odake (Shinshu U.)
Time & Location , Room 458
Abstract
Reference(s)

Talk Title Higgs boson as a gauge field in discrete spaces
Speaker Masaki Yang (KEK, Tsukuba)
Time & Location , Room 458
Abstract
Reference(s) arXiv:1501.03888 [hep-ph]

Talk Title The Hawking–Unruh Phenomenon on Graphene
Speaker Satoshi Ohya (Nihon U., IQS)
Time & Location , Room 458
Abstract
Reference(s) arXiv:1108.2340v1 [cond-mat.mtrl-sci]

Talk Title Nonextensive phenomena in black hole thermodynamics and cosmology
Speaker Viktor Czinner (Wigner RCP, Budapest)
Time & Location , Room 458
Abstract In the first part of the talk, I will present a novel approach to black hole thermodynamics where the Bekenstein–Hawking entropy of Schwarzschild black hole event horizons is regarded as a nonextensive Tsallis entropy, and its formal logarithm, the Rényi entropy, is considered for the canonical analysis. In the second part I will discuss some unpublished results of an ongoing research, where the problem of cosmological information entropy is considered from a nonextensive point of view.
Reference(s)

Talk Title Efimov状態とくりこみ群のリミットサイクル
Speaker Yusuke Horinouchi (Tokyo U.)
Time & Location , Room 458
Abstract
Reference(s) [1] V. Efimov, Phys. Lett. 33B (1970) 563; Sov. J. Nucl. Phys. 12 (1971) 589
[2] K. G. Wilson, Phys. Rev. D3 (1971) 1818
[3] M. Berninger, et al., Phys. Rev. Lett. 107 (2011) 120401
[4] R. J. Wild, et al., Phys. Rev. Lett. 108 (2012) 145305
[5] S. Roy, et al., Phys. Rev. Lett. 111 (2013) 053202
[6] J. von Stecher, J. P. D'Incao, and C. H. Greene, Nat. Phys. 5 (2009) 417
[7] Y. Horinouchi and M. Ueda, Phys. Rev. Lett. 114 (2015) 025301

Talk Title Reality and hermiticity from maximizing overlap in the future-included complex action theory
Speaker Keiichi Nagao (Ibaraki U., Mito)
Time & Location , Room 458
Abstract In the complex action theory whose path runs over not only past but also future we study a normalized matrix element of an operator $\mathcal{O}$ defined in terms of the future state at the latest time $T_B$ and the past state at the earliest time $T_A$ with a proper inner product that makes normal a given Hamiltonian that is non-normal at first. We present a theorem that states that, provided that the operator $\mathcal{O}$ is $Q$-Hermitian, i.e., Hermitian with regard to the proper inner product, the normalized matrix element becomes real and time-develops under a $Q$-Hermitian Hamiltonian for the past and future states selected such that the absolute value of the transition amplitude from the past state to the future state is maximized. Furthermore, we give a possible procedure to formulate the $Q$-Hermitian Hamiltonian in terms of $Q$-Hermitian coordinate and momentum operators, and construct a conserved probability current density. This talk is based on the collaboration with Holger Bech Nielsen (Prog.Theor.Exp.Phys.(2015)051B01(arXiv:1502.00385[quant-ph]).
Reference(s) arXiv:1502.00385 [quant-ph]

Talk Title Three-generation model and flavor symmetry in string theory
Speaker Shogo Kuwakino (Kyoto Sangyo U.)
Time & Location , Room 458
Abstract
Reference(s) arXiv:1502.00789 [hep-ph]

Talk Title 情報熱力学とマクスウェルのデーモン
Speaker Takahiro Sagawa (Tokyo U.)
Time & Location , Room 458
Abstract
Reference(s)

Talk Title Equivalence of Wilson Actions
Speaker Hidenori Sonoda (Kobe U.)
Time & Location , Room 458
Abstract
Reference(s) arXiv:1503.08578 [hep-th]

Talk Title N=3 higher spin holography and Higgs phenomenon
Speaker Yasuaki Hikida (Rikkyo U.)
Time & Location , Room 458
Abstract
Reference(s)

Talk Title 複数場インフレーション後に起こる重力的粒子生成の定式化について
Speaker Yuki Watanabe (Gunma Coll. Tech.)
Time & Location , Room 458
Abstract
Reference(s) arXiv:1503.08430 [astro-ph.CO]

Talk Title 弦の場の理論における位相的構造と反転対称性
Speaker Toshiko Kojita (Kyoto Sangyo U.)
Time & Location , Room 458
Abstract
Reference(s) arXiv:1307.6636 [hep-th]

Talk Title Superconformal Quantum Mechanics from M2-branes
Speaker Tadashi Okazaki (KEK, Tsukuba)
Time & Location , Room 458
Abstract
Reference(s) arXiv:1503.03906 [hep-th]