A Note on the Stability of the Dark Energy Model from Time Crystals
General Relativity and Quantum Cosmology
2025-08-27 v2 High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
In this note, we investigate the stability of the dark energy model from time crystals proposed in [1]. We emphasize two ingredients, the coupling of the scalar field to gravity, and the fact that these time crystals are on an expanding FRW background, which play a crucial role in the field's dynamics. The Hubble parameter, which contributes a drag term to the equations of motion, grows with time until the scale factor diverges. When taken into account, these factors also alleviate the stability concern of [2].
Cite
@article{arxiv.2504.16764,
title = {A Note on the Stability of the Dark Energy Model from Time Crystals},
author = {Laura Mersini-Houghton},
journal= {arXiv preprint arXiv:2504.16764},
year = {2025}
}
Comments
3 pages