Closed String Amplitudes from Gauge Fixed String Field Theory

Abstract

Closed string diagrams are derived from cubic open string field theory using a gauge fixed kinetic operator. The basic idea is to use a string propagator that does not generate a boundary to the world sheet. Using this propagator and the closed string vertex, the moduli space of closed string surfaces is covered, so closed string scattering amplitudes should be reproduced. This kinetic operator could be a gauge fixed form of the string field theory action around the closed string vacuum.

10 pages, revtex, 3 figures. Discussion on the covering of moduli expanded, version to appear in PRD

References in corpus (1)

• Perturbative diagrams in string field theory

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