Regularization of identity based solution in string field theory

Abstract

We demonstrate that an Erler-Schnabl type solution in cubic string field theory can be naturally interpreted as a gauge invariant regularization of an identity based solution. We consider a solution which interpolates between an identity based solution and ordinary Erler-Schnabl one. Two gauge invariant quantities, the classical action and the closed string tadpole, are evaluated for finite value of the gauge parameter. It is explicitly checked that both of them are independent of the gauge parameter.

9 pages, minor typos corrected and references added

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Cited by in corpus (14)

• Solutions from boundary condition changing operators in open string field theory
• Relevant Deformations in Open String Field Theory: a Simple Solution for Lumps
• Connecting Solutions in Open String Field Theory with Singular Gauge Transformations
• Solutions from boundary condition changing operators in open superstring field theory
• The energy of the analytic lump solution in SFT
• Comments on regularization of identity based solutions in string field theory
• Constraints on a class of classical solutions in open string field theory
• The Phantom Term in Open String Field Theory
• The Identity String Field and the Sliver Frame Level Expansion
• Analytic solutions for Dp branes in SFT
• Multibrane solutions in cubic superstring field theory
• Level truncation analysis of regularized identity based solutions
• Comments on real tachyon vacuum solution without square roots
• A singular one-parameter family of solutions in cubic superstring field theory