Stable Emergent Universe from Conservation Laws

P. Labrana, S. Del Campo, R. Herrera, E. Guendelman

Research output: Contribution to journalConference articlepeer-review

Abstract

In this paper, based on JCAP 1608 (2016) 049, we show that there is a class of emergent universes models, derived from scale invariant two measures theories with spontaneous symmetry breaking (s.s.b) of the scale invariance, which can have both classical stability and do not suffer the instability pointed out by Mithani-Vilenkin towards collapse [4, 3, 2, 5]. We find that this stability is due to the presence of a symmetry in the "emergent phase", which together with the non linearities of the theory, does not allow that the FLRW scale factor to be smaller that a certain minimum value a 0 in a certain protected region.

Original languageEnglish
Article number012026
JournalJournal of Physics: Conference Series
Volume1043
Issue number1
DOIs
StatePublished - 25 Jun 2018
Externally publishedYes
Event20th Chilean Physics Symposium - Santiago, Chile
Duration: 30 Nov 20162 Dec 2016

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