Rolling tachyon and the Phase Space of Open String Field Theory

TL;DR

This paper constructs the symplectic form for open string field theory on a ZZ-brane, calculates the energy of the rolling tachyon, and confirms Sen's proposal using boundary conformal field theory and closed string insights.

Contribution

It introduces a symplectic form on the covariant phase space and verifies the energy of the rolling tachyon aligns with theoretical predictions.

Findings

Symplectic form constructed for open string field theory on a ZZ-brane.

Energy of the rolling tachyon matches Sen's earlier proposal.

Confirmation of theoretical predictions using boundary conformal field theory.

Abstract

We construct the symplectic form on the covariant phase space of the open string field theory on a ZZ-brane in c=1 string theory, and determine the energy of the rolling tachyon solution, confirming Sen's earlier proposal based on boundary conformal field theory and closed string considerations.