Topological structure in string field theory and the physics of multiple D-brane solutions
Project/Area Number |
25400253
|
Research Category |
Grant-in-Aid for Scientific Research (C)
|
Allocation Type | Multi-year Fund |
Section | 一般 |
Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
|
Research Institution | Kyoto University |
Principal Investigator |
Hata Hiroyuki 京都大学, 理学研究科, 教授 (70164837)
|
Research Collaborator |
KOJITA Toshiko
|
Project Period (FY) |
2013-04-01 – 2018-03-31
|
Project Status |
Completed (Fiscal Year 2017)
|
Budget Amount *help |
¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000)
Fiscal Year 2016: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000)
|
Keywords | 弦の場の理論 / CSFT / 多重ブレイン解 / KBc代数 / 古典解 / Batalin-Vilkoviski形式 / KBc-代数 / BV形式 / BRST対称性 / CSFT / Chern-Simons理論 / 巻き付き数 |
Outline of Final Research Achievements |
We carried out mainly the following two researches which are related with the present research subject: (1) It has been known that the origins of the non-trivial energy of multi-brane solutions in Cubic String Field Theory (CSFT) are the singularities at K=0 and K=infinity. However, there was the problem that the energy defined by the gravitational coupling vanishes for the solution with singularity at K=infinity. In the present research, we precisely examined this problem and succeeded in resolving the contradiction. (2) We carried out, using the Batalin-Vilkoviski formalism, the analysis of (a part of) physical fluctuations around the tachyon vacuum solution and the 2-brane solution in CSFT. We found that the fluctuation around the former solution is unphysical, while that around the latter solution is physical.
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Report
(6 results)
Research Products
(4 results)