English

Holographic dark energy through Loop Quantum Gravity inspired entropy

General Relativity and Quantum Cosmology 2023-10-03 v1 Cosmology and Nongalactic Astrophysics High Energy Physics - Theory

Abstract

We construct a new cosmological holographic dark energy scenario based on Loop Quantum Gravity inspired entropy, instead of the standard Bekenstein-Hawking one. The former is an extended black-hole entropy that arises from non-extensive statistics and quantum geometry and is quantified by a new dimensionless parameter qq, which possesses standard holographic dark energy as a particular sub-case. In the future event horizon as the Infrared cutoff, we provide a simple differential equation for the dark energy density parameter, as well as an analytical expressions for the corresponding equation-of-state and deceleration parameters. We show that the scenario at hand can describe successfully the usual thermal history of the Universe, with the sequence of matter and dark-energy epochs, while the transition to acceleration takes place at z0.6z\approx 0.6. Additionally, according to the value of the new entropic parameter qq, the dark energy equation-of-state parameter can have a rich behavior, and it can be quintessence-like, phantom-like, or experience the phantom-divide crossing.

Keywords

Cite

@article{arxiv.2310.01050,
  title  = {Holographic dark energy through Loop Quantum Gravity inspired entropy},
  author = {Andreas Lymperis},
  journal= {arXiv preprint arXiv:2310.01050},
  year   = {2023}
}

Comments

19 pages, 4 figures

R2 v1 2026-06-28T12:38:05.559Z