| 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)
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| 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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