More D-brane bound states

TL;DR

This paper constructs supersymmetric D-brane bound state solutions with a dimension difference of two using T-duality, extending understanding of bound states in superstring theories.

Contribution

It introduces new low-energy background solutions for D-brane bound states via T-duality, preserving supersymmetry and expanding the known configurations.

Findings

Solutions preserve half of the supersymmetries.

Bound states connect different D-brane dimensions.

T-duality maps single branes to bound states.

Abstract

The low-energy background field solutions corresponding to D-brane bound states which possess a difference in dimension of two are presented. These solutions are constructed using the T-duality map between the type IIA and IIB superstring theories. Since supersymmetry is preserved by T-duality, the bound state solutions retain the supersymmetric properties of the initial (single) D-brane states from which they are produced, i.e., they preserve one half of the supersymmetries.