Equal charge black holes and seven dimensional gauged supergravity

TL;DR

This paper constructs and analyzes specific supersymmetric black hole and soliton solutions in seven-dimensional gauged supergravity with equal charges, revealing stable configurations without causality violations.

Contribution

It introduces new supersymmetric black hole and soliton solutions in seven-dimensional gauged supergravity with equal charges and angular momenta, exploring their thermodynamics and causality properties.

Findings

Existence of rotating supersymmetric black holes without closed timelike curves

Discovery of smooth supersymmetric topological solitons

Analysis of thermodynamic behavior and BPS limits

Abstract

We present various supergravity black holes of different dimensions with some U(1) charges set equal in a simple, common form. Black hole solutions of seven dimensional U(1)^2 gauged supergravity with three independent angular momenta and two equal U(1) charges are obtained. We investigate the thermodynamics and the BPS limit of this solution, and find that there are rotating supersymmetric black holes without naked closed timelike curves. There are also supersymmetric topological soliton solutions without naked closed timelike curves that have a smooth geometry.