Hot and heavy dark matter from a weak scale phase transition

Baldes, Iason; Gouttenoire, Yann; Sala, Filippo

doi:10.21468/SciPostPhys.14.3.033

SciPost Physics

Hot and heavy dark matter from a weak scale phase transition

Iason Baldes, Yann Gouttenoire, Filippo Sala

SciPost Phys. 14, 033 (2023) · published 14 March 2023

doi: 10.21468/SciPostPhys.14.3.033
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Abstract

We point out that dark matter which is produced non-adiabatically in a phase transition (PT) with fast bubble walls receives a boost in velocity which leads to long free-streaming lengths. We find that this could be observed via the suppressed matter power spectrum for dark matter masses around $\mathbf{ 10^8 - 10^9}$ GeV and energy scales of the PT around $\mathbf{ 10^{2} - 10^3}$ GeV. The PT should take place at the border of the supercooled regime, i.e. approximately when the Universe becomes vacuum dominated. This work offers novel physics goals for galaxy surveys, Lyman-$\alpha$, stellar stream, lensing, and 21-cm observations, and connects these to the gravitational waves from such phase transitions, and more speculatively to possible telescope signals of heavy dark matter decay.

TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.14.3.033
TI  - Hot and heavy dark matter from a weak scale phase transition
PY  - 2023/03/14
UR  - https://www.scipost.org/SciPostPhys.14.3.033
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 14
IS  - 3
SP  - 033
A1  - Baldes, Iason
AU  - Gouttenoire, Yann
AU  - Sala, Filippo
AB  - We point out that dark matter which is produced non-adiabatically in a phase transition (PT) with fast bubble walls receives a boost in velocity which leads to long free-streaming lengths. We find that this could be observed via the suppressed matter power spectrum for dark matter masses around $\mathbf{ 10^8 - 10^9}$ GeV and energy scales of the PT around $\mathbf{ 10^{2} - 10^3}$ GeV. The PT should take place at the border of the supercooled regime, i.e. approximately when the Universe becomes vacuum dominated. This work offers novel physics goals for galaxy surveys, Lyman-$\alpha$, stellar stream, lensing, and 21-cm observations, and connects these to the gravitational waves from such phase transitions, and more speculatively to possible telescope signals of heavy dark matter decay.
ER  -

@Article{10.21468/SciPostPhys.14.3.033,
	title={{Hot and heavy dark matter from a weak scale phase transition}},
	author={Iason Baldes and Yann Gouttenoire and Filippo Sala},
	journal={SciPost Phys.},
	volume={14},
	pages={033},
	year={2023},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.14.3.033},
	url={https://scipost.org/10.21468/SciPostPhys.14.3.033},
}

Cited by 9

Authors / Affiliations: mappings to Contributors and Organizations

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¹ Iason Baldes,
² Yann Gouttenoire,
³ Filippo Sala

Funders for the research work leading to this publication

Azrieli Foundation
Fonds De La Recherche Scientifique - FNRS (FNRS) (through Organization: Fonds National de la Recherche Scientifique [FNRS])
Sorbonne Université