We present an investigation on cosmological implications resulting from spontaneous dark symmetry breaking in conjunction with the Witten effect.Furthermore,we examine the mass of hidden monopoles generated by phase t...We present an investigation on cosmological implications resulting from spontaneous dark symmetry breaking in conjunction with the Witten effect.Furthermore,we examine the mass of hidden monopoles generated by phase transition as well as the impact of axion-monopole interactions on the axion mass.Following spontaneous breaking of the PQ symmetry,axions emitted by cosmic strings or domain walls as well as hidden monopoles generated during this transition may collectively contribute to the observed dark matter relic density.Additionally,the stochastic gravitational wave background generated by sub-GeV phase transitions and by the decay of axionic domain walls formed during sub-ZeV phase transitions could account for the low-frequency gravitational wave signals detected by PTA experiments.展开更多
基金upported by the National Key Research and Development Program of China(2021YFC2203004)supported by the National Natural Science Foundation of China(12305109,12147102)+4 种基金Chongqing Natural Science Foundation project(CSTB2022NSCQ-MSX0534)Science and Technology Research Project of Chongqing Municipal Education Commission(KJQN202300614)supported by the National Natural Science Foundation of China(12322505,12347101)Chongqing Natural Science Foundation(CSTB2024NSCQ-JQX0022)Chongqing Talents:Exceptional Young Talents Project(cstc2024ycjhbgzxm0020).
文摘We present an investigation on cosmological implications resulting from spontaneous dark symmetry breaking in conjunction with the Witten effect.Furthermore,we examine the mass of hidden monopoles generated by phase transition as well as the impact of axion-monopole interactions on the axion mass.Following spontaneous breaking of the PQ symmetry,axions emitted by cosmic strings or domain walls as well as hidden monopoles generated during this transition may collectively contribute to the observed dark matter relic density.Additionally,the stochastic gravitational wave background generated by sub-GeV phase transitions and by the decay of axionic domain walls formed during sub-ZeV phase transitions could account for the low-frequency gravitational wave signals detected by PTA experiments.
