New angles on D-branes

TL;DR

This paper presents new D-brane solutions at angles, computes their physical properties, and uses T-duality to generate additional configurations, revealing insights into supersymmetry preservation in string theory.

Contribution

It introduces a novel class of angled D-brane solutions, analyzes their mass, charge, and supersymmetry properties, and employs T-duality to expand the solution space.

Findings

D-brane configurations at angles preserve one-quarter of supersymmetry.

Mass and charge densities saturate the BPS bound.

T-duality generates new angled D-brane solutions.

Abstract

A low-energy background field solution is presented which describes several D-membranes oriented at angles with respect to one another. The mass and charge densities for this configuration are computed and found to saturate the BPS bound, implying the preservation of one-quarter of the supersymmetries. T-duality is exploited to construct new solutions with nontrivial angles from the basic one.