Rolling down to D-brane and tachyon matter

TL;DR

This paper explores the decay process of unstable D-branes, constructing an asymptotic solution in boundary string field theory that describes the formation of lower-dimensional D-branes and tachyon matter.

Contribution

It introduces a new asymptotic solution modeling inhomogeneous D-brane decay and tachyon matter formation within boundary string field theory.

Findings

Tachyon matter exists around lower-dimensional D-branes.

Constructed an asymptotic solution for inhomogeneous decay.

Described the spatial structure of decaying D-branes.

Abstract

We investigate the spatially inhomogeneous decay of an unstable D-brane and construct an asymptotic solution which describes a codimension one D-brane and the tachyon matter in boundary string field theory. In this solution, the tachyon matter exists around the lower-dimensional D-brane.