Comments on Marginal Deformations in Open String Field Theory

TL;DR

This paper introduces a simple class of solutions in open string field theory that model marginal deformations of boundary conformal field theories, with potential applications to rolling tachyons.

Contribution

It presents a new, straightforward class of solutions for marginal deformations in open string field theory involving non-singular primary operators.

Findings

Solutions describe marginal deformations with non-singular operator products.

Application potential to rolling tachyon scenarios.

Simplifies understanding of boundary conformal field theory deformations.

Abstract

In this short letter we present a class of remarkably simple solutions to Witten's open string field theory that describe marginal deformations of the underlying boundary conformal field theory. The solutions we consider correspond to dimension-one matter primary operators that have non-singular operator products with themselves. We briefly discuss application to rolling tachyons.