Open-Closed Duality at Tree Level

TL;DR

This paper explores a duality between open and closed string theories by analyzing unstable D-brane decay in an electric field, showing classical open string results align with closed string properties, indicating a deep connection.

Contribution

It demonstrates a tree-level open-closed duality in string theory by comparing decay properties of unstable D-branes with closed string states.

Findings

Open string decay results match closed string state properties.

Supports the idea of a duality between open and closed strings.

Provides evidence for open-closed duality at tree level.

Abstract

We study decay of unstable D-branes in string theory in the presence of electric field, and show that the classical open string theory results for various properties of the final state agree with the properties of closed string states into which the system is expected to decay. This suggests a duality between tree level open string theory on unstable D-branes and closed strings at high density.