Null-Brane Solutions in Supergravities

TL;DR

This paper introduces a new class of time-dependent null-brane solutions in supergravity theories across various dimensions, providing intersection rules and solving bosonic field equations to explore their properties and significance.

Contribution

It presents a novel class of intersecting light-like brane solutions in supergravity, including their superposition and intersection rules, derived by directly solving field equations.

Findings

Derived explicit null-brane solutions in arbitrary dimensions

Established intersection and superposition rules for null-branes

Discussed potential significance of these solutions in supergravity contexts

Abstract

We find a new class of time-dependent brane solutions in supergravities in arbitrary dimensions $D$. These are general intersecting light-like branes (null-branes), and their superposition and intersection rules are obtained. This is achieved by directly solving bosonic field equations for supergravity coupled to a dilaton and antisymmetric tensor fields. We discuss their possible significance.