Enhancon Solutions: Pushing Supergravity to its Limits

TL;DR

This paper explores the most general nonextremal enhancon solutions in supergravity, identifying unique regular horizon solutions and generalizing shell solutions that satisfy energy conditions, highlighting the need for additional input beyond supergravity.

Contribution

It introduces the most general nonextremal enhancon solutions, classifies solution families, and discusses the uniqueness of regular horizon solutions in supergravity.

Findings

Unique regular horizon solution identified.

Two families of solutions with shells satisfying energy conditions.

Additional input beyond supergravity needed for solution uniqueness.

Abstract

We extend the investigation of nonextremal enhancons, finding the most general solutions with the correct symmetry and charges. There are two families of solutions. One of these contains a solution with a regular horizon found previously; this previous example is shown to be the unique solution with a regular horizon. The other family generalises a previous nonextreme extension of the enhancon, producing solutions with shells which satisfy the weak energy condition. We argue that identifying a unique solution with a shell requires input beyond supergravity.