New perspectives on future rip scenarios with holographic dark energy

Autor:	Trivedi, Oem, Scherrer, Robert J.
Rok vydání:	2024
Předmět:	Astrophysics - Cosmology and Nongalactic Astrophysics General Relativity and Quantum Cosmology High Energy Physics - Theory
Zdroj:	Phys.Rev.D 110 (2024) 2, 023521
Druh dokumentu:	Working Paper
DOI:	10.1103/PhysRevD.110.023521
Popis:	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. Comment: v3, matches the published version in PRD, minor clarifications and typos corrected, 9 pages with no figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/2404.08912 Zobrazit plný text záznamu View this record from Arxiv