Stable, thin wall, negative mass bubbles in de Sitter space-time

Understand

Negative mass makes perfect physical sense as long as the dominant energy condition is satisfied by the corresponding energy-momentum tensor.

• Heretofore, only {\it configurations} of negative mass had been found \cite{Belletete:2013nqa,Mbarek:2014ppa}, the analysis did not address stability or dynamics.
• In this paper, we analyze both of these criteria.
• We demonstrate the existence of {\it stable}, static, negative mass bubbles in an asymptotically de Sitter space-time.