2 citations · 3 across the 6 of their papers we have counts for
7 papers
Gravitational waves from strong first-order phase transitions in an expanding Universe
Jintao Zou, Zizhuo Zhao, Yongtao Jia +1
We investigate the gravitational waves generated by first-order phase transitions (PTs) in an expanding Universe. Using a scalar field-fluid coupled model, we perform three-dimensi…
Vacuum Decay and Baryogenesis Associated with Primordial Black Holes at Finite Temperature
Qi Sun, Ligong Bian
Within finite-temperature effective potential framework, we study the effects of PBHs on vacuum decay, the associated gravitational wave spectrum, and the baryon asymmetry. For the…
Simulating first-order phase transition during inflation
Jintao Zou, Ligong Bian, Shao-Jiang Wang
Ending the inflation by vacuum decay is considered infeasible due to the graceful exit problem. Even if considering an alternative field other than the inflaton to realize a first-…
The phenomenon of the axion kinetic misalignment with a generic PQ-breaking operator
Xiangwei Yin, Ligong Bian
We investigate the phenomenology induced by generic PQ-breaking operators within the axion kinetic misalignment framework. We analyze their impact on the relic density of axion dar…
Collapse of Axion Domain Wall Induced by Helical Primordial Magnetic Fields
Zizhuo Zhao, Yuefeng Di, Ligong Bian +1
Stable domain wall (DW) must decay to avoid overclose the Universe. A commonly used solution is to slightly break the PQ symmetry by introducing a bias term in the potential. In th…
Testing Nambu-Goto approximation of cosmic string by lattice field simulations
Zizhuo Zhao, Ligong Bian, Jing Shu
The precise calculation of gravitational wave (GW) from cosmic string networks is of significant theoretical and experimental interest. The Nambu--Goto (NG) approximation has long…
Numerical simulations of density perturbation and gravitational wave production from cosmological first-order phase transition
Jintao Zou, Zhiqing Zhu, Zizhuo Zhao +1
We conducted three-dimensional lattice simulations to study the density perturbation and gravitational waves (GWs) during first-order phase transition (FOPT). We find that for phas…