Closed String Amplitudes in Open String Field Theory

Abstract

We investigate gauge invariant operators corresponding to on-shell closed string states in open string field theory. Using both oscillator representation and conformal mapping techniques, we calculate a two closed string tachyon amplitude that connects two gauge invariant operators by an open string propagator.We find that this amplitude is in a complete agreement with the usual disc amplitude.

14 pages, 3 figures

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Cited by in corpus (8)

• A Simple Analytic Solution for Tachyon Condensation
• Analytical Solutions of Open String Field Theory
• Gauge Invariant Overlaps for Classical Solutions in Open String Field Theory
• Regularization of identity based solution in string field theory
• Closed string deformations in open string field theory I: bosonic string
• Closed string symmetries in open string field theory: tachyon vacuum as sine-square deformation
• Classical solution for ghost D-branes in string field theory
• $KBc$ algebra and the gauge invariant overlap in open string field theory