5 papers
PTagent: An LLM-assisted tool for finite-temperature model construction in cosmological phase transitions
Lei Wu, Yang Xiao, Jin Min Yang +1
Cosmological phase-transition calculations require well-defined finite-temperature numerical models, whose construction involves assembling model information under consistent theor…
Subcritical bubble prehistory in weak first-order phase transition
Guangshang Chen, Yang Xiao, Jin Min Yang +1
Standard calculations of cosmological first-order phase transitions usually assume critical bubbles to nucleate on a homogeneous symmetric vacuum background. However, this assumpti…
Gravitational Wave Signature of Aspherical Bubbles Driven by Thermal Fluctuation
Ligong Bian, Guangshang Chen, Song Li +4
Cosmological first-order phase transitions are a well-motivated source of stochastic gravitational waves (GWs), but most predictions are made based on the highly idealized model of…
Enhancing Phase Transition Calculations with Fitting and Neural Network
Ligong Bian, Hongxin Wang, Yang Xiao +3
The computation of bounce action in a phase transition involves solving partial differential equations, inherently introducing non-negligible numerical uncertainty. Deriving charac…
The Bubble Wall Velocity in Local Thermal Equilibrium and Energy Budget with Full Effective Potential
Zongguo Si, Hongxin Wang, Lei Wang +2
We develop a framework based on the full one-loop finite-temperature effective potential model, within which the bubble wall velocity is calculated using the local thermal equilibr…