Null energy condition of dynamical black holes in spatially flat FLRW space-times
General Relativity and Quantum Cosmology
2025-05-15 v1
Abstract
A new identity reported here for the first time is used for studying how the null energy condition can be applied to the models of dynamical black holes proposed recently [I. I. Cot\u aescu, Eur. Phys. J. C (2022) 82:86]. It is shown that this condition selects the models with physical meaning whose horizons evolve in accordance with the general black hole theory in frames with null coordinates [S. A. Hayward, Phys. Rev. D {\bf 49} (1994) 6467].
Keywords
Cite
@article{arxiv.2505.08836,
title = {Null energy condition of dynamical black holes in spatially flat FLRW space-times},
author = {Ion I. Cotaescu},
journal= {arXiv preprint arXiv:2505.08836},
year = {2025}
}
Comments
7 pages, no figures; accepted to arXive after publication