Negative mass bubbles in de Sitter space-time

TL;DR

This paper investigates the theoretical existence of negative mass bubble solutions in de Sitter space-time, demonstrating configurations that satisfy physical energy conditions yet asymptotically resemble negative mass Schwarzschild-de Sitter space.

Contribution

It presents new solutions of Einstein's equations with negative mass bubbles in de Sitter space-time that meet all dominant energy and hydrostatic equilibrium conditions.

Findings

Existence of negative mass bubble configurations in de Sitter space.

Configurations satisfy dominant energy condition and Einstein equations.

Asymptotic approach to negative mass Schwarzschild-de Sitter space.

Abstract

We study the possibility of the existence of negative mass bubbles within a de Sitter space-time background with matter content corresponding to a perfect fluid. It is shown that there exist configurations of the perfect fluid, that everywhere satisfy the dominant energy condition, the Einstein equations and the equations of hydrostatic equilibrium, however asymptotically approach the exact solution of Schwarzschid-de Sitter space-time with a negative mass.