Mathematical Physics Laboratory

Mathematical aspects of physics are indispensable for understanding universal characteristics of various kinds of theoretical physics, and even for new discovery in physics. We study superstring theory and its mathematical aspects, including their applications and relations to particle physics, hadron physics, nuclear physics, condensed matter physics, and cosmology. Superstring theory is a mathematical framework in which gravity and quantum mechanics are described in a unified fashion. Our research aims at intrinsic understanding of the universe and elementary particles, through which discovery of new descriptions of various theoretical physics should be possible.

Research Subjects

• Superstring theory
• Application of superstring theory and D-branes
• Mathematical aspects of hadron physics, nuclear physics, condensed matter physics and cosmology
• Gauge/gravity duality (AdS/CFT correspondence)

Publications

1. Koji Hashimoto, Norihiro Iizuka, Piljin Yi:
   "A Matrix Model for Baryons and Nuclear Forces"
   JHEP 1010:003,2010
2. Koji Hashimoto, Norihiro Iizuka:
   "Three-Body Nuclear Forces from a Matrix Model"
   JHEP 1011:058,2010
3. Masaki Murata, Martin Schnabl:
   "Multibrane Solutions in Open String Field Theory"
   JHEP 1207 (2012) 063.
4. Tetsutaro Higaki, Fuminobu Takahashi:
   "Dark Radiation and Dark Matter in Large Volume Conpactifications"
   JHEP 1211 (2012) 125
5. Minoru Eto, Toshiaki Fujimori, Sven Bjarke Gudnason, Yunguo Jiang, Kenichi Konishi, Muneto Nitta, Keisuke Ohashi:
   "Group Theory of Non-Abelian Vortices"
   JHEP 1011:042,2010
6. Koji Hashimoto, Norihiro Iizuka, Takashi Oka:
   "Rapid Thermalization by Baryon Injection in Gauge/Gravity Duality"
   Phys.Rev. D84 (2011) 066005
7. Yoshimasa Hidaka, Naoki Yamamoto:
   "No-Go Theorem for Critical Phenomenon in Large-Nc QCD"
   Phys. Rev. Lett. 108 (2012) 121601
8. Yoichi Ikeda, Hideaki Iida:
   "Quark-anti-quark potentials from Nambu-Bethe-Salpeter amplitudes on lattice"
   Prog. Theor. Phys. 128 (2012) , 941-954
9. Yoshimasa Hidaka:
   "Counting rule for Nambu-Goldstone modes in nonrelativistic systems"
   Phys.Rev.Lett., accepted