%0 Generic %1 Rakic2009 %A Rakic, Aleksandar %A Simon, Dennis %A Adamek, Julian %A Niemeyer, Jens C. %D 2009 %K LTB Shell-Crossing Void %T On the fate of vacuum bubbles on matter backgrounds %U http://arxiv.org/abs/0911.3910 %X In this letter we discuss cosmological first order phase transitions with de Sitter bubbles nucleating on (inhomogeneous) matter backgrounds. The de Sitter bubble can be a toy model for an inflationary phase of universes like our own. Using the thin wall approximation and the Israel junction method we trace the classical evolution of the formed bubbles within a compound model. We first address homogeneous ambient space (FRW model) and already find that bubbles nucleated in a dust dominated background cannot expand. For an inhomogeneous dust background (LTB model) we describe cases with at least initially expanding bubbles. Yet, an ensuing passage of the bubble wall through ambient curvature inhomogeneities remains unnoticed for observers inside the bubble. Notable effects also for interior observers are found in the case of a rapid background phase transition in a FRW model.

@misc{Rakic2009, abstract = { In this letter we discuss cosmological first order phase transitions with de Sitter bubbles nucleating on (inhomogeneous) matter backgrounds. The de Sitter bubble can be a toy model for an inflationary phase of universes like our own. Using the thin wall approximation and the Israel junction method we trace the classical evolution of the formed bubbles within a compound model. We first address homogeneous ambient space (FRW model) and already find that bubbles nucleated in a dust dominated background cannot expand. For an inhomogeneous dust background (LTB model) we describe cases with at least initially expanding bubbles. Yet, an ensuing passage of the bubble wall through ambient curvature inhomogeneities remains unnoticed for observers inside the bubble. Notable effects also for interior observers are found in the case of a rapid background phase transition in a FRW model. }, added-at = {2011-02-15T13:08:46.000+0100}, author = {Rakic, Aleksandar and Simon, Dennis and Adamek, Julian and Niemeyer, Jens C.}, biburl = {https://www.bibsonomy.org/bibtex/2f83c70563629ca25b8ab6356379cd97c/ad4}, description = {On the fate of vacuum bubbles on matter backgrounds}, interhash = {0e2ada8973ab6975fa36e203d7dc1507}, intrahash = {f83c70563629ca25b8ab6356379cd97c}, keywords = {LTB Shell-Crossing Void}, note = {cite arxiv:0911.3910 Comment: 4 pages, 2 figures, proceedings (Annalen der Physik) of the Grassmannian Conference in Fundamental Cosmology (Grasscosmofun'09) Szczecin, Poland, 14-19 September 2009}, timestamp = {2011-02-15T13:08:46.000+0100}, title = {On the fate of vacuum bubbles on matter backgrounds}, url = {http://arxiv.org/abs/0911.3910}, year = 2009 }