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Fully stable cosmological solutions with a non-singular classical bounce

Author(s): Ijjasa, Anna; Steinhardt, Paul J.

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Abstract: We recently showed how it is possible to use a cubic Galileon action to construct classical cosmological solutions that enter a contracting null energy condition (NEC) violating phase, bounce at finite values of the scale factor and exit into an expanding NEC-satisfying phase without encountering any singularities or pathologies. A drawback of these examples is that singular behavior is encountered at some time either just before or just after the NEC-violating phase. In this Letter, we show that it is possible to circumvent this problem by extending our method to actions that include the next order L-4 Galileon interaction. Using this approach, we construct non-singular classical bouncing cosmological solutions that are non-pathological for all times. (C) 2016 The Author(s). Published by Elsevier B.V.
Publication Date: 10-Jan-2017
Electronic Publication Date: 28-Nov-2016
Citation: Ijjasa, Anna, Steinhardt, Paul J. (2017). Fully stable cosmological solutions with a non-singular classical bounce. PHYSICS LETTERS B, 764 (289 - 294. doi:10.1016/j.physletb.2016.11.047
DOI: doi:10.1016/j.physletb.2016.11.047
ISSN: 0370-2693
EISSN: 1873-2445
Pages: 289 - 294
Type of Material: Journal Article
Journal/Proceeding Title: PHYSICS LETTERS B
Version: Final published version. This is an open access article.

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