Rolling Tachyons and Decaying Branes

TL;DR

This paper introduces new exact classical solutions for decaying D-branes via rolling tachyons, analyzing pressure effects and resulting configurations, including arrays of D-branes, with simpler methods than previous studies.

Contribution

It provides simpler yet exact classical solutions for rolling tachyons and explores the impact of spatial variation on decay outcomes, including D-brane array formations.

Findings

Exact classical solutions for rolling tachyons

Pressure influences decay resulting in D-brane arrays

Simpler methods compared to recent works

Abstract

We present new rolling tachyon solutions describing the classical decay of D-branes. Our methods are simpler than those appearing in recent works, yet our results are exact in classical string theory. The role of pressure in the decay is studied using tachyon profiles with spatial variation. In this case the final state involves an array of codimension one D-branes rather than static, pressureless tachyon matter.