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arXiv · 2404.16509

Gauged Q-ball dark matter through a cosmological first-order phase transition

Siyu Jiang·Fa Peng Huang·Pyungwon Ko
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Abstract

As a new type of dynamical dark matter mechanism, we discuss the stability of the gauged Q-ball dark matter and its production mechanism through a cosmological first-order phase transition. This work delves into the study of gauged Q-ball dark matter generated during the cosmic phase transition. We demonstrate detailed discussions on the stability of gauged Q-balls to rigorously constrain their charge and mass ranges. Additionally, employing analytic approximations and the mapping method, we provide qualitative insights into gauged Q-balls. We establish an upper limit on the gauge coupling constant and give the relic density of stable gauged Q-ball dark matter formed during a first-order phase transition. Furthermore, we discuss potential observational signatures or constraints of gauged Q-ball dark matter, including astronomical observations and gravitational wave signals.

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Siyu Jiang, Fa Peng Huang, Pyungwon Ko. 2024-04-25. Gauged Q-ball dark matter through a cosmological first-order phase transition. https://doi.org/10.1007/jhep07(2024)053

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