Tachyon Condensation on Torus and T-duality

TL;DR

This paper presents an exact boundary string field theory solution for brane-anti-brane pairs on a torus, explores its T-dual, and derives the Nahm transformation from tachyon condensation, advancing understanding of D-brane dynamics.

Contribution

It provides a new exact solution with nonzero D-brane charge and links tachyon condensation to Nahm transformation via T-duality.

Findings

Exact solution with nonzero D-brane charge on a torus

Explicit T-dual configuration derived

Nahm transformation obtained from tachyon condensation

Abstract

We find an exact solution, with a nonzero net D-brane charge, in the boundary string field theory of brane-anti-brane pairs on a torus. We explicitly take the T-dual of this configuration. The Nahm-transformation of the instantons is derived from the tachyon condensation.