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Fully stable cosmological solutions with a non-singular classical bounce | | Anna Ijjas
; Paul J. Steinhardt
; | | Date: |
5 Sep 2016 | | 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
${cal L}_4$ Galileon interaction. Using this approach, we construct
non-singular classical bouncing cosmological solutions that are
non-pathological for all times. | | Source: | arXiv, 1609.1253 | | Services: | Forum | Review | PDF | Favorites | |
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