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arxiv: 1807.01587 · v3 · pith:XKLYLMUDnew · submitted 2018-07-02 · 🌀 gr-qc · astro-ph.CO· hep-ph· hep-th

Is the Big Rip unreachable?

classification 🌀 gr-qc astro-ph.COhep-phhep-th
keywords particleproductionuniverseafterwardsbackreactionconstantcyclicde-sitter
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I investigate the repercussions of particle production when the Universe is dominated by a hypothetical phantom substance. I show that backreaction due to particle production prevents the density from shooting to infinity at a Big Rip, but instead forces it to stabilise at a large constant value. Afterwards there is a period of de-Sitter inflation. I speculate that this might lead to a cyclic Universe.

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