Institute of Theoretical Physics Chinese Academy of Sciences |
学术报告 |
Title 题目 |
Bouncing universe and non-BPS brane |
Speaker 报告人 |
Dr. Jin U Kang |
Kim Il Sung University, Pyongyang, DPR. Korea |
Date 日期 |
2011-10-21 AM 10:00 Friday |
Venue 地点 |
ITP New Building 6420, 理论物理研究所新楼四层多媒体教室 |
Abstract 摘要 |
We describe string frame bouncing universe scenarios involving the creation and annihilation of a non-BPS D9-brane in type IIA superstring theory. We find several classes of solutions, in which the bounce is driven by the tachyon dynamics of the non-BPS brane. The metric and the dilaton are consistently described in terms of the lowest order effective action. The bounce solutions interpolate between contracting and expanding pre-big bang (or post-big bang) solutions.
|