A Picture of D-branes at Strong Coupling

TL;DR

This paper derives a phase space formulation of the Born-Infeld action for D-branes, revealing that at strong coupling, D-branes' world-volumes decompose into multiple tensile strings, providing insights into string theory dynamics.

Contribution

It introduces a phase space approach to the Born-Infeld action and explores the strong coupling limit where D-branes split into tensile strings.

Findings

D-brane world-volume splits into tensile strings at strong coupling

Phase space formulation of the Born-Infeld action derived

Strong coupling limit corresponds to tensionless D-branes

Abstract

We use a phase space description to (re)derive a first order form of the Born-Infeld action for D-branes. This derivation also makes it possible to consider the limit where the tension of the D-brane goes to zero. We find that in this limit, which can be considered to be the strong coupling limit of the fundamental string theory, the world-volume of the D-brane generically splits into a collection of tensile strings.