48
Conferences 2018
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[["minutes", "Minutes"], ["notes", "Notes"], ["paper", "Paper"], ["poster", "Poster"], ["slides", "Slides"], ["summary", "Summary"]]
6f153cadb11783a9e9633aa6ce792772
6
KEK Theory workshop 2018
<p>In the series of the KEK-TH workshops, this year we plan to have special days focusing on string phenomenology/cosmology. The workshop will also have regular sessions with broad coverage on field theory and string theory.</p>
<p>The list of invited speakers includes currently:</p>
<p>Sinya Aoki (YITP, Kyoto U.)<br />
Nobuyuki Ishibashi (U. Tsukuba)<br />
Hikaru Kawai (Kyoto U.)<br />
Noriaki Kitazawa (Tokyo Metropolitan U.)<br />
Yoshio Kikukawa (U. Tokyo)<br />
Tatsuo Kobayashi (Hokkaido U.)<br />
Taichiro Kugo (Kyoto Sangyo U.)<br />
Hajime Otsuka (Waseda U.)<br />
Sakura Schafer-Nameki (U. Oxford)<br />
Sang-Jin Sin (Hanyang U.)<br />
Shigeki Sugimoto (YITP, Kyoto U.)<br />
Tadashi Takayanagi (YITP, Kyoto U.)<br />
Kentaroh Yoshida (Kyoto U.)<br />
</p>
<p>We are looking forward to your participation.<br />
<br />
Organizers: Y. Asano, K. Hamada, M. Hatsuda, S. Iso, Y. Ito, K. Kawana, Y. Kimura, Y. Kitazawa, S. Mizoguchi, M. Natsuume, J. Nishimura, N. Shiba, S. Shiba, T. Suyama, S. Tsutsui Secretary: Yuko Ohno (Ms.) Email: yukoohno[AT]post.kek.jp</p>
<h2><span style="color:#B22222">Group Photo</span></h2>
<p><a href="https://conference-indico.kek.jp/indico/event/48/picture/2.jpg">https://conference-indico.kek.jp/indico/event/48/picture/2.jpg</a></p>
True
Kenkyu-Honkan bldg. 1F
Kobayashi Hall
2018-12-17T08:30:00
2018-12-20T15:50:00
2018-05-21T13:14:43
2018-12-26T05:11:51
Japan
36
false
[["minutes", "Minutes"], ["notes", "Notes"], ["paper", "Paper"], ["poster", "Poster"], ["slides", "Slides"], ["summary", "Summary"]]
2
On the emergence of (3+1)-dimensional expanding space-time in the Lorentzian type IIB matrix model (II)
Mr.
SOKENDAI
d41d8cd98f00b204e9800998ecf8427e
Kenkyu-Honkan bldg. 1F
Kobayashi Hall
2018-12-19T15:00:00
2018-12-19T18:00:00
03:00
The type IIB matrix model has been studied as a non-perturbative formulation of superstring theory. In particular, by Monte Carlo simulation of the Lorentzian type IIB matrix model, (3+1)-dimensional expanding space-time was shown to emerge dynamically. Moreover, from simulations of simplified models, it was suggested that the expansion of space is exponential at early times and it turns into a power-law at later times. This behavior is reminiscent of the inflation and the FRW universe in the radiation dominant era, respectively. In this work we investigate the space-time structure of the matrix configurations generated by the simulation and find that the 3-dimensional space is essentially described by the Pauli matrices. We attribute this problem to the approximation used to avoid the sign problem in Monte Carlo simulation and discuss the possibility that a regular 3-dimensional space emerges if we simulate the model without such an approximation.