Comments on Solutions for Nonsingular Currents in Open String Field Theories

Abstract

We investigate analytic solutions to Witten's bosonic string field theory and Berkovits' WZW-type superstring field theory. We construct solutions with parameters out of simpler ones, using a commutative monoid that includes the family of wedge states. Our solutions are generalizations of solutions for marginal deformations by nonsingular currents, and can also reproduce Schnabl's tachyon vacuum solution in bosonic string field theory. This implies that such known solutions are generated from simple solutions which are based on the identity state. We also discuss gauge transformations and induced field redefinitions for our solutions in both bosonic and super string field theory.

23 pages; v2: PTPTeX, typos corrected

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• General marginal deformations in open superstring field theory
• The boundary state from open string fields
• On the classical equivalence of superstring field theories
• Four Lectures on Analytic Solutions in Open String Field Theory
• Solutions from boundary condition changing operators in open superstring field theory
• Comments on Lumps from RG flows
• From the Berkovits formulation to the Witten formulation in open superstring field theory
• String Field Theory Solution for Any Open String Background. II
• Marginally Deformed Rolling Tachyon around the Tachyon Vacuum in Open String Field Theory
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• Comments on Takahashi-Tanimoto's scalar solution
• Homotopy Operators and Identity-Based Solutions in Cubic Superstring Field Theory
• Superstring field theory equivalence: Ramond sector
• Tachyon Vacuum of Bosonic Open String Field Theory in Marginally Deformed Backgrounds