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Study of superstrings and D-branes using string field theory

Research Project

Project/Area Number 25400242
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Particle/Nuclear/Cosmic ray/Astro physics
Research InstitutionUniversity of Tsukuba

Principal Investigator

Ishibashi Nobuyuki  筑波大学, 数理物質系, 教授 (70211729)

Project Period (FY) 2013-04-01 – 2019-03-31
Project Status Completed (Fiscal Year 2018)
Budget Amount *help
¥5,200,000 (Direct Cost: ¥4,000,000、Indirect Cost: ¥1,200,000)
Fiscal Year 2017: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2016: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2013: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Keywords超弦理論 / 弦の場の理論 / 共形場の理論 / 正則化
Outline of Final Research Achievements

Superstring theory is considered to be the most promising candidate for the unified theory of elementary particles including gravity. In order to construct viable models of elementary particles using superstring theory, we need to understand the so-called "nonperturbative effects" of the superstring theory. String field theory is supposed to be the most promising approach to study such effects of superstring theory. The goal of this project is to study superstring theory using the string field theory. In this project, we have
1. solved the contact term problem and constructed a supsertring field theory using the light-cone gauge approach
2. obtained classical solutions of string field theories

Academic Significance and Societal Importance of the Research Achievements

現在の素粒子理論における最大の目標の一つは、重力の量子論を理解することである。量子力学は現在の我々の日常生活で出会う様々なテクノロジーの基礎となっている。また、重力は我々にとって最も身近な力である。残念ながら、今のところ重力を量子力学の枠組みで理解することができていない。本研究の結果はこの大目標への一歩となっている。このような研究は遠い未来のテクノロジーを支える基礎になる可能性がある。

Report

(7 results)
  • 2018 Annual Research Report   Final Research Report ( PDF )
  • 2017 Research-status Report
  • 2016 Research-status Report
  • 2015 Research-status Report
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (23 results)

All 2018 2017 2016 2015 2014 2013 Other

All Journal Article (10 results) (of which Peer Reviewed: 10 results,  Open Access: 7 results,  Acknowledgement Compliant: 7 results) Presentation (11 results) (of which Int'l Joint Research: 5 results,  Invited: 9 results) Remarks (2 results)

  • [Journal Article] Multiloop amplitudes of light-cone gauge superstring field theory: odd spin structure contributions2018

    • Author(s)
      Nobuyuki Ishibashi, Koichi Murakami
    • Journal Title

      Journal of High Energy Physics

      Volume: 03 Issue: 3 Pages: 1-27

    • DOI

      10.1007/jhep03(2018)063

    • NAID

      120007133935

    • Related Report
      2017 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] Light-cone gauge superstring field theory in linear dilaton background2017

    • Author(s)
      Nobuyuki Ishibashi
    • Journal Title

      PTEP

      Volume: 2017 033B01 Issue: 3

    • DOI

      10.1093/ptep/ptx012

    • NAID

      120007129227

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] String field theory solution corresponding to constant background magnetic field2017

    • Author(s)
      Nobuyuki Ishibashi, Isao Kishimoto, Tomohiko Takahashi
    • Journal Title

      Progress of Theoretical and Experimental Physics

      Volume: 2017 (1): 013B06 Issue: 1 Pages: 1-23

    • DOI

      10.1093/ptep/ptw185

    • NAID

      120007134950

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Multiloop amplitudes of light-cone gauge NSR string field theory in noncritical dimensions2017

    • Author(s)
      Nobuyuki Ishibashi and Koichi Murakami
    • Journal Title

      Journal of High Energy Physics

      Volume: 01 Issue: 1

    • DOI

      10.1007/jhep01(2017)034

    • NAID

      120007134919

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Dipolar quantization and the infinite circumference limit of two-dimensional conformal field theories2016

    • Author(s)
      Nobuyuki Ishibashi and Tsukasa Tada
    • Journal Title

      International Journal of Modern Physics

      Volume: A31 160170 Issue: 32 Pages: 1650170-1650170

    • DOI

      10.1142/s0217751x16501700

    • NAID

      120007135271

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Worldsheet theory of light-cone gauge noncritical strings on higher genus Riemann surfaces2016

    • Author(s)
      Nobuyuki Ishibashi and Koichi Murakami
    • Journal Title

      Journal of High Energy Physics

      Volume: 06 Issue: 6

    • DOI

      10.1007/jhep06(2016)087

    • NAID

      120007129549

    • Related Report
      2016 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Infinite circumference limit of conformal field theory2015

    • Author(s)
      Nobuyuki Ishibashi and Tsukasa Tada
    • Journal Title

      Jounal of Physics

      Volume: A48 no.31 Issue: 31 Pages: 315402-315402

    • DOI

      10.1088/1751-8113/48/31/315402

    • NAID

      120007136286

    • Related Report
      2015 Research-status Report
    • Peer Reviewed / Open Access / Acknowledgement Compliant
  • [Journal Article] Comments on Takahashi-Tanimoto’s scalar solution2015

    • Author(s)
      Nobuyuki Ishibashi
    • Journal Title

      JHEP

      Volume: 1502 168 Issue: 2 Pages: 1-27

    • DOI

      10.1007/jhep02(2015)168

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Energy from the gauge invariant observables2013

    • Author(s)
      Takayuki Baba, Nobuyuki Ishibashi
    • Journal Title

      JHEP

      Volume: 1204 Issue: 4 Pages: 50-50

    • DOI

      10.1007/jhep04(2013)050

    • NAID

      120007136824

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Journal Article] Multiloop amplitudes of light-cone gauge bosonic string field theory in noncritical dimensions2013

    • Author(s)
      Nobuyuki Ishibashi, Koichi Murakami
    • Journal Title

      Journal of High Energy Physics

      Volume: 09 Issue: 9 Pages: 53-53

    • DOI

      10.1007/jhep09(2013)053

    • NAID

      120007136800

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] “Light-cone gauge string field theory and dimensional regularization - Computation of FI D terms”2018

    • Author(s)
      Nobuyuki Ishibashi
    • Organizer
      西宮湯川記念国際滞在型研究会 "New Frontiers in String Theory 2018" (July 2- August 3, Yukawa Institute for Theoretical Physics, Kyoto, Japan)
    • Related Report
      2018 Annual Research Report
    • Int'l Joint Research / Invited
  • [Presentation] Multiloop amplitudes of light-cone gauge superstring field theory: Odd spin structure contributions2018

    • Author(s)
      Nobuyuki Ishibashi
    • Organizer
      SFT@HIT(June 23-25, 2017, Holon Institute of Technology, Holon, Israel)
    • Related Report
      2017 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Light-cone gauge superstring field theory and dimensional regularization2017

    • Author(s)
      Nobuyuki Ishibashi
    • Organizer
      Recent Developments on Light Front
    • Place of Presentation
      Arnold Sommerfeld Center for Theoretical Physics, Munich Germany
    • Year and Date
      2017-03-14
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Light-cone gauge superstring field theory in linear dilaton background2016

    • Author(s)
      石橋 延幸
    • Organizer
      日本物理学会2016年秋季大会
    • Place of Presentation
      宮崎大学木花キャンパス、宮崎県宮崎市
    • Year and Date
      2016-09-21
    • Related Report
      2016 Research-status Report
  • [Presentation] Light-cone gauge superstring field theory in linear dilaton background2016

    • Author(s)
      Nobuyuki Ishibashi
    • Organizer
      VIII Workshop on String Field Theory and Related Aspects
    • Place of Presentation
      ICTP-SAIFR, Sao Paulo, Brazil
    • Year and Date
      2016-05-31
    • Related Report
      2016 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Dimensional regularization of light-cone gauge superstring field theory and multiloop amplitudes2015

    • Author(s)
      石橋 延幸
    • Organizer
      日本物理学会2015年秋季大会
    • Place of Presentation
      大阪市立大学杉本キャンパス(大阪府大阪市)
    • Year and Date
      2015-09-25
    • Related Report
      2015 Research-status Report
  • [Presentation] Dimensional regularization of light-cone gauge superstring field theory and multiloop amplitudes2015

    • Author(s)
      Nobuyuki Ishibashi
    • Organizer
      International Conference on String Field Theory and Related Aspects VII, SFT2015
    • Place of Presentation
      the Center for Theoretical Physics, Sichuan University(中国、成都)
    • Year and Date
      2015-05-11
    • Related Report
      2015 Research-status Report
    • Int'l Joint Research / Invited
  • [Presentation] Multiloop amplitudes of light-cone gauge superstring field theory in noncritical dimensions2015

    • Author(s)
      Nobuyuki Ishibashi
    • Organizer
      弦の場の理論15奈良
    • Place of Presentation
      奈良女子大学
    • Year and Date
      2015-03-05 – 2015-03-06
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] Comments on the Takahashi-Tanimoto tachyon vacuum solution2014

    • Author(s)
      Nobuyuki Ishibashi
    • Organizer
      String field theory and related aspects VI, SFT2014
    • Place of Presentation
      SISSA Trieste, Italy
    • Year and Date
      2014-07-21 – 2014-08-01
    • Related Report
      2014 Research-status Report
    • Invited
  • [Presentation] Light-cone gauge string field theory and dimensional regularization2014

    • Author(s)
      Nobuyuki Ishibashi
    • Organizer
      KEK Theory Workshop 2014
    • Place of Presentation
      高エネルギー加速器研究機構(つくば市)
    • Related Report
      2013 Research-status Report
    • Invited
  • [Presentation] 弦の場の理論2013

    • Author(s)
      石橋延幸
    • Organizer
      場の理論の進展
    • Place of Presentation
      京都大学基礎物理学研究所(京都)
    • Related Report
      2013 Research-status Report
    • Invited
  • [Remarks] Nobuyuki Ishibashi's home page

    • URL

      http://www-het.ph.tsukuba.ac.jp/~ishibash/index.html

    • Related Report
      2017 Research-status Report 2016 Research-status Report 2015 Research-status Report 2014 Research-status Report
  • [Remarks] Nobuyuki Ishibashi's home page

    • URL

      http://www-het.ph.tsukuba.ac.jp/~ishibash/index.html

    • Related Report
      2013 Research-status Report

URL: 

Published: 2014-07-25   Modified: 2020-03-30  

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