Non-Abelian Structures in BSFT and RR couplings

TL;DR

This paper presents a unified framework for understanding non-Abelian structures, RR couplings, and excitations on D-branes in string theory using an algebraic approach to non-commutativity.

Contribution

It introduces a novel algebraic approximation capturing string theory non-commutativity to unify various D-brane phenomena.

Findings

Unified description of non-Abelian D-brane structures

Comprehensive account of RR couplings in type II string theory

Connection between tachyon condensation and non-commutative algebra

Abstract

In this talk we show that the tachyon annihilation combined with an approximation, in which string theory non-commutativity structure is captured by the algebra of differential operators on space-time, gives a unified point of view on: non-Abelian structures on $D$-branes; all lowest energy excitations on $D$-branes; all RR couplings in type II string theory.