Generalized Hot Enhancons

TL;DR

This paper reviews the physics of hot enhancon solutions in supergravity, generalizes existing solutions to arbitrary charges, and discusses their physical properties, including the potential existence of horizon branches.

Contribution

It introduces a generalized family of hot enhancon solutions with arbitrary charge vectors and demonstrates their equivalence to hot fractional D0 brane solutions.

Findings

Existence of a horizon branch for hot enhancon solutions.

Generalization of solutions to arbitrary charge vectors.

Equivalence between enhancon solutions and fractional D0 branes.

Abstract

We review what has been learnt and what remains unknown about the physics of hot enhancons following studies in supergravity. We recall a rather general family of static, spherically symmetric, non-extremal enhancon solutions describing D4 branes wrapped on K3 and discuss physical aspects of the solutions. We embed these solutions in the six dimensional supergravity describing Type IIA strings on K3 and generalize them to have arbitrary charge vector. This allows us to demonstrate the equivalence with a known family of hot fractional D0 brane solutions, to widen the class of solutions of this second type and to carry much of the discussion across from the D4 brane analysis. In particular we argue for the existence of a horizon branch for these branes.