Stable, thin wall, negative mass bubbles in de Sitter space-time. UdeM Preprint ID: UdeM-GPP-TH-19-274 Authors: Matthew C. Johnson , M. B. Paranjape , Antoine Savard , Natalia Tapia-Arellano arXiv: http://arxiv.org/abs/1910.01774 INSPIRE: http://inspirehep.net/record/1757530?ln=en