Vacuum vertices and the ghost-dilaton

Abstract

We complete the proof of the ghost-dilaton theorem in string theory by showing that the coupling constant dependence of the vacuum vertices appearing in the closed string action is given correctly by one-point functions of the ghost-dilaton. To prove this at genus one we develop the formalism required to evaluate off-shell amplitudes on tori.

15 pages, 1 figure, uses phyzzx macros

References in corpus (4)

• Introduction to string field theory
• Closed String Field Theory: Quantum Action and the BV Master Equation
• Quantum Background Independence of Closed String Field Theory
• The Dilaton Theorem and Closed String Backgrounds

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• String Field Theory -- A Modern Introduction
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• Topological recursion for hyperbolic string field theory
• Geometrising the closed string field theory action
• The path towards manifest background independence