https://doi.org/10.1140/epjc/s10052-024-13380-7
Regular Article
Impact of Q-balls formed by first-order phase transition on sterile neutrino dark matter
1
MOE Key Laboratory of TianQin Mission, TianQin Research Center for Gravitational Physics and School of Physics and Astronomy, Frontiers Science Center for TianQin, Gravitational Wave Research Center of CNSA, Sun Yat-sen University (Zhuhai Campus), 519082, Zhuhai, China
2
School of Physical Science and Technology, Inner Mongolia University, 010021, Hohhot, China
b
jiangsy36@mail2.sysu.edu.cn
c
xiufeili@imu.edu.cn
Received:
6
June
2024
Accepted:
16
September
2024
Published online:
7
October
2024
We explore the mechanism that can explain the production of lepton asymmetry and two types of sterile neutrino dark matter. The first type involves heavy sterile dark matter produced directly by the decay of Q-balls which are formed by first-order phase transition in the early universe; the second consists of keV sterile neutrino dark matter, produced resonantly with the aid of lepton asymmetry from Q-ball decay. Besides, gravitational waves from cosmic strings generated during the phase transition process could be detected at future interferometers.
© The Author(s) 2024
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Funded by SCOAP3.
