Exploring spin of ultralight dark matter with gravitational wave detectors
High Energy Physics - Phenomenology
2023-10-17 v1 Cosmology and Nongalactic Astrophysics
General Relativity and Quantum Cosmology
Abstract
We propose a novel method for distinguishing the spin of ultralight dark matter (ULDM) using interferometric gravitational wave detectors. ULDM can be a bosonic field of spin-0, 1, or 2, and each induces distinctive signatures in signals. We find that the finite-time traveling effect causes a dominant signal for spin-0 and spin-1 ULDM, while not for spin-2. By using overlap reduction functions (ORF) of multiple detectors, we can differentiate between the spins of ULDM. Furthermore, we point out that the current constraint on the coupling constant of spin-1 ULDM to baryons becomes 30 times weaker when the finite-time light-travel effect on the ORF is taken into account.
Keywords
Cite
@article{arxiv.2310.10646,
title = {Exploring spin of ultralight dark matter with gravitational wave detectors},
author = {Yusuke Manita and Hiroki Takeda and Katsuki Aoki and Tomohiro Fujita and Shinji Mukohyama},
journal= {arXiv preprint arXiv:2310.10646},
year = {2023}
}
Comments
17 pages, 5 figures