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arXiv · 2404.08912

New perspectives on future rip scenarios with holographic dark energy

Oem Trivedi·Robert J. Scherrer
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Abstract

We explore the asymptotic future evolution of holographic dark energy (HDE) models, in which the density of the dark energy is a function of a cutoff scale $L$. We develop a general methodology to determine which models correspond to future big rip, little rip, and pseudo-rip (de Sitter) evolution, and we apply this methodology to a variety of well-studied HDE models. None of these HDE models display little rip evolution, and we are able to show, under very general assumptions, that HDE models with a Granda-Oliveros cutoff almost never evolve toward a future little rip. We extend these results to HDE models with nonstandard Friedman equations and show that a similar conclusion applies: little rip evolution is a very special case that is almost never realized in such models.

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Oem Trivedi, Robert J. Scherrer. 2024-04-13. New perspectives on future rip scenarios with holographic dark energy. https://doi.org/10.1103/physrevd.110.023521

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