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Energy conditions and a bounce in FLRW cosmologies

Benjamin K. Tippett·Kayll Lake
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Abstract

Exploiting the existence of two "cosmological" constants, one associated with the classical Lovelock theorem and one with the vacuum energy density, we argue, in a model independent way, that in spatially closed FLRW cosmologies with a positive definite effective cosmological constant there exists a range in this constant that serves as a sufficient condition for the satisfaction of the null, weak, strong and dominant energy conditions at a bounce. The application of energy conditions is not unambiguous and we show how the bounce can be considered classically and how, we believe more reasonably, it can be considered a matter of quantum cosmology.

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Benjamin K. Tippett, Kayll Lake. 2004-09-22. Energy conditions and a bounce in FLRW cosmologies. https://arxiv.org/abs/gr-qc/0409088

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