What is open string field theory able to describe?

• Project/Area Number: 24540254
• 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: The University of Tokyo
• Principal Investigator: OKAWA Yuji 東京大学, 大学院総合文化研究科, 准教授 (10466823)
• Project Period (FY): 2012-04-01 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000); Fiscal Year 2016: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2015: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000); Fiscal Year 2014: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2013: ¥780,000 (Direct Cost: ¥600,000、Indirect Cost: ¥180,000); Fiscal Year 2012: ¥910,000 (Direct Cost: ¥700,000、Indirect Cost: ¥210,000)
• Keywords: 弦の場の理論 / 超弦理論 / 国際研究者交流 / チェコ

Outline of Final Research Achievements

In string field theory, which is an approach to nonperturbative formulations of string theory, construction of an action of superstring field theory incorporating a sector which describes fermions had not been successful for about thirty years and it was one of the most serious obstacles. In this research we succeeded in constructing a gauge-invariant action for open superstring field theory which describes both bosons and fermions. This is the first complete formulation of superstring field theory at the classical level in a Lorentz-covariant fashion.

Research Products

• [Int'l Joint Research] チェコ科学アカデミー物理学研究所(チェコ)
• [Journal Article] Complete action for open superstring field theory with cyclic A∞ structure (2016)
  • Author(s): Theodore Erler, Yuji Okawa and Tomoyuki Takezaki
  • Journal Title: Journal of High Energy Physics Volume: 1608 Issue: 8 Pages: 012-012
  • DOI: 10.1007/jhep08(2016)012
  • Peer Reviewed / Open Access / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Complete action for open superstring field theory (2016)
  • Author(s): Hiroshi Kunitomo and Yuji Okawa
  • Journal Title: Progress of Theoretical and Experimental Physics Volume: 023B01 Issue: 2 Pages: 1-34
  • DOI: 10.1093/ptep/ptv189
  • NAID: 120005848309
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] From the Berkovits formulation to the Witten formulation in open superstring field theory (2014)
  • Author(s): Yuki Iimori, Toshifumi Noumi, Yuji Okawa and Shingo Torii
  • Journal Title: Journal of High Energy Physics Volume: 03 Issue: 3 Pages: 44-44
  • DOI: 10.1007/jhep03(2014)044
  • Peer Reviewed
• [Journal Article] Gauge-invariant observables and marginal deformations in open string field theory (2013)
  • Author(s): Matej Kudrna, Toru Masuda, Yuji Okawa, Martin Schnabl and Kenichiro Yoshida
  • Journal Title: Journal of High Energy Physics Volume: 01 Issue: 1 Pages: 103-103
  • DOI: 10.1007/jhep01(2013)103
  • Peer Reviewed
• [Journal Article] Analytic Methods in Open String Field Theory (2012)
  • Author(s): Yuji Okawa
  • Journal Title: Progress of Theoretical Physics Volume: 128 Issue: 6 Pages: 1001-1060
  • DOI: 10.1143/ptp.128.1001
  • NAID: 110009586066
  • Peer Reviewed
• [Presentation] 超弦の場の理論の完全な定式化 (2016)
  • Author(s): 大川 祐司
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北学院大学 泉キャンパス（宮城県仙台市泉区）
  • Year and Date: 2016-03-20
  • Invited
• [Presentation] Complete action for open superstring field theory I (2016)
  • Author(s): Yuji Okawa
  • Organizer: VIII Workshop on String Field Theory and Related Aspects
  • Place of Presentation: サンパウロ（ブラジル）
  • Int'l Joint Research / Invited
• [Presentation] Berkovits 型の超開弦の場の理論を用いた Witten 型理論の正則化
  • Author(s): 飯森 悠樹，野海 俊文，大川 祐司，鳥居 真吾
  • Organizer: 日本物理学会2012年秋季大会
  • Place of Presentation: 京都産業大学（京都府、京都市）