Open String Creation by S-Branes

TL;DR

This paper investigates how s-branes can create open strings during decay, using boundary Liouville theory, and finds a rapid energy transfer to closed strings indicated by a divergence in pair creation rate.

Contribution

It introduces a novel approach to modeling s-brane decay and open string creation via boundary Liouville theory in the minisuperspace approximation.

Findings

Hagedorn-like divergence in pair creation rate

Rapid transfer of s-brane energy to closed strings

Boundary Liouville theory models open string creation

Abstract

An sp-brane can be viewed as the creation and decay of an unstable D(p+1)-brane. It is argued that the decaying half of an sp-brane can be described by a variant of boundary Liouville theory. The pair creation of open strings by a decaying s-brane is studied in the minisuperspace approximation to the Liouville theory. In this approximation a Hagedorn-like divergence is found in the pair creation rate, suggesting the s-brane energy is rapidly transferred into closed string radiation.