Stringy Domain Walls of N=1, D=4 Supergravity

TL;DR

This paper explores supersymmetric domain wall solutions in N=1, D=4 supergravity derived from M2-brane instantons on M5-branes in G_2 manifolds, including both half- and quarter-supersymmetry breaking cases.

Contribution

It introduces specific domain wall solutions in N=1, D=4 supergravity linked to M-brane instantons and analyzes their supersymmetry properties.

Findings

Identification of half-supersymmetric domain walls

Construction of composite solutions breaking more supersymmetry

Insights into M-brane instanton effects in supergravity

Abstract

We examine domain wall solutions of N=1, D=4 supergravity which preserve half of the supersymmetry and arise from Euclidean M2-brane instantons on M5-branes wrapping associative 3-cycles of G_2 holonomy manifolds. We also investigate composite solutions which break an additional half of the supersymmetry.