2013 Fiscal Year Final Research Report
study of nonperturbative aspects of superstring theory using string field theory
| Project/Area Number |
23540332
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Multi-year Fund |
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| Section | 一般 |
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| Research Field |
Particle/Nuclear/Cosmic ray/Astro physics
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| Research Institution | Okayama Institute for Quantum Physics |
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Principal Investigator |
MURAKAMI Koichi 岡山光量子科学研究所, その他部局等, 研究員 (00400698)
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| Co-Investigator(Kenkyū-buntansha) |
NINOMIYA Masao 岡山光量子光量子科学研究所, 所長 (40198536)
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| Project Period (FY) |
2011 – 2013
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| Keywords | 素粒子論 / 超弦理論 / 場の理論 / 素粒子論的宇宙論 |
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| Research Abstract |
The purpose of this research is to overcome the ``contact term problem", which is a divergence problem possessed by superstring field theory and has been an obstacle to the formulation of the theory for a long time. We proposed a novel regularization scheme in which the number of space-time dimensions are shifted to a sufficiently large negative value. We verified our regularization mainly in the context of the light-cone gauge superstring field theory in the NSR formalism. We have shown that our regularization works well at least for the tree-level amplitudes. We have made a progress also in the analysis of the multiloop amplitudes.
In addition to these analyses, we have pursued a new formulation of string field theory in which the string worldsheet is discritized. We also have studied cosmology particularly including quantum effects and back-reaction of matter fields.
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Research Products
(14 results)
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[Remarks] 村上公一, ブース出展「CD からのぞく「量子力学」の世界」, 平成25 年度「集まれ!科学好き」にて, 2014年1月 (岡山大学創立五十周年記念館).(アウトリーチ活動情報)
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[Remarks] 村上公一, ミニ講座「弦理論-統一理論を求めて」全国物理コンテスト 物理チャレンジ2012フィジックスライブ2012年8月.(アウトリーチ活動情報)
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[Remarks] 村上公一, 「第4回科学チャレンジコンテスト」(科学Try アングル岡山主催) にて審査員2012年2月.(アウトリーチ活動情報)
