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Relevant deformations in open string field theory: a simple solution for lumps

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Abstract

We propose a remarkably simple solution of cubic open string field theory which describes inhomogeneous tachyon condensation. The solution is in one-to-one correspondence with the IR fixed point of the RG-flow generated in the two-dimensional worldsheet theory by integrating a relevant operator with mild enough OPE on the boundary. It is shown how the closed string overlap correctly captures the shift in the closed string one point function between the UV and the IR limits of the flow. Examples of lumps in non-compact and compact transverse directions are given.

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Authors and Affiliations

  1. International School for Advanced Studies (SISSA), Via Bonomea 165, 34136, Trieste, Italy

    L. Bonora

  2. INFN — Sezione di Trieste, Via Bonomea 165, 34136, Trieste, Italy

    L. Bonora

  3. International Solvay Institutes and Physique Théorique et Mathématique, Université Libre de Bruxelles, ULB C.P. 231, B-1050, Bruxelles, Belgium

    C. Maccaferri

  4. Department of Physics and University College, Sungkyunkwan University, Suwon, 440-746, South Korea

    D. D. Tolla

Authors
  1. L. Bonora
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  2. C. Maccaferri
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  3. D. D. Tolla
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Correspondence to C. Maccaferri.

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ArXiv ePrint: 1009.4158

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Bonora, L., Maccaferri, C. & Tolla, D.D. Relevant deformations in open string field theory: a simple solution for lumps. J. High Energ. Phys. 2011, 107 (2011). https://doi.org/10.1007/JHEP11(2011)107

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