PreprintarXiv licencearXiv
Gravitational Instability of Cold Axion Dark Matter Beyond Minimal Coupling
Abstract
Following recent observations of unexpectedly massive galaxies at high redshift by the James Webb Space Telescope, the revision of Dark Matter (DM) models --specifically regarding how DM couples to gravity-- has become a central topic in Cosmology. In this paper, we develop an axion model for Cold Dark Matter (CDM) with a non-minimal coupling to gravity. From this framework, we evaluate the gravitational instability in the hydrodynamic limit. Our results demonstrate how gravitational instabilities depend on the non-minimal coupling parameter, providing a novel tool for aligning with the high-redshift observations from the James Webb Space Telescope.
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BibTeX
@misc{corderopatino2026gravitational,
title = {{Gravitational Instability of Cold Axion Dark Matter Beyond Minimal Coupling}},
author = {Bryan Cordero-Patino and Álvaro Duenas-Vidal and Jorge Segovia},
howpublished = {arXiv},
year = {2026},
month = oct,
doi = {10.48550/arxiv.2610.25984},
eprint = {2610.25984},
archivePrefix = {arXiv},
url = {https://arxiv.org/abs/2610.25984},
}
RIS
TY - UNPB
TI - Gravitational Instability of Cold Axion Dark Matter Beyond Minimal Coupling
AU - Bryan Cordero-Patino
AU - Álvaro Duenas-Vidal
AU - Jorge Segovia
PY - 2026
DA - 2026/10/19
PB - arXiv
DO - 10.48550/arxiv.2610.25984
UR - https://arxiv.org/abs/2610.25984
AB - Following recent observations of unexpectedly massive galaxies at high redshift by the James Webb Space Telescope, the revision of Dark Matter (DM) models --specifically regarding how DM couples to gravity-- has become a central topic in Cosmology. In this paper, we develop an axion model for Cold Dark Matter (CDM) with a non-minimal coupling to gravity. From this framework, we evaluate the gravitational instability in the hydrodynamic limit. Our results demonstrate how gravitational instabilities depend on the non-minimal coupling parameter, providing a novel tool for aligning with the high-redshift observations from the James Webb Space Telescope.
ER -