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Numerical twist-even SU(1,1)-singlet solutions in open string field theory around the identity-based solution

  • Regular Article - Theoretical Physics
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  • Published: 16 February 2021
  • volume 2021, Article number: 133 (2021)
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Numerical twist-even SU(1,1)-singlet solutions in open string field theory around the identity-based solution
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  • Isao Kishimoto1 &
  • Tomohiko Takahashi2 
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  • 3 Citations

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A preprint version of the article is available at arXiv.

Abstract

Using the level truncation method, we construct numerical solutions, which are twist even and SU(1) singlet, in the theory around the Takahashi-Tanimoto identity-based solution (TT solution) with a real parameter a in the framework of bosonic open string field theory. We find solutions corresponding to “double brane” and “ghost brane” solutions which were constructed by Kudrna and Schnabl in the conventional theory around the perturbative vacuum. Our solutions show somewhat similar a-dependence to tachyon vacuum and single brane solutions, which we found in the earlier works. In this sense, we might be able to expect that they are consistent with the conventional interpretation of a-dependence of the TT solution. We observe that numerical complex solutions at low levels become real ones at higher levels for some region of the parameter a. However, these real solutions do not so improve interpretation for double brane.

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Authors and Affiliations

  1. Center for Liberal Arts and Sciences, Sanyo-Onoda City University, Daigakudori 1-1-1, Sanyo-Onoda, Yamaguchi, 756-0884, Japan

    Isao Kishimoto

  2. Department of Physics, Nara Women’s University, Nara, 630-8506, Japan

    Tomohiko Takahashi

Authors
  1. Isao Kishimoto
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  2. Tomohiko Takahashi
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Correspondence to Isao Kishimoto.

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ArXiv ePrint: 2011.08378

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Kishimoto, I., Takahashi, T. Numerical twist-even SU(1,1)-singlet solutions in open string field theory around the identity-based solution. J. High Energ. Phys. 2021, 133 (2021). https://doi.org/10.1007/JHEP02(2021)133

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  • Received: 23 November 2020

  • Accepted: 10 January 2021

  • Published: 16 February 2021

  • DOI: https://doi.org/10.1007/JHEP02(2021)133

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Keywords

  • Bosonic Strings
  • D-branes
  • String Field Theory
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