8 papers
Transition rate for process involving particles with high momentum in a plasma and infrared physics for QED plasma
Chengxing Zhai
We derive a formula for computing the transition rate for a process involving particles with momentum much higher than the temperature and chemical potentials in a plasma by using…
Gauge-fixing parameter dependence of two-point gauge variant correlation functions
Chengxing Zhai
The gauge-fixing parameter dependence of two-point gauge variant correlation functions is studied for QED and QCD. We show that, in three Euclidean dimensions, or for four-dime…
Atomic effects in tritium beta decay
Lowell Brown, Chengxing Zhai
The electron neutrino mass has been measured in several tritium beta decay experiments. These experiments are sensitive to a small neutrino mass because the energy release of the d…
The Free Energy of Hot Gauge Theories with Fermions Through g^5
Chengxing Zhai, Boris Kastening
We compute the free energy density for gauge theories, with fermions, at high temperature and zero chemical potential. In the expansion $F=T^4 [c_0+c_2 g^2+c_3 g^3+(c'_4\ln g+c…
The Three-Loop Free Energy for High-Temperature QED and QCD with Fermions
Peter Arnold, Chengxing Zhai
We compute the free energy density for gauge theories, with fermions, at high temperature and zero chemical potential. Specifically, we analytically compute the free energy through…
The Three-Loop Free Energy for Pure Gauge QCD
Peter Arnold, Chengxing Zhai
We compute the free energy density for pure non-Abelian gauge theory at high temperature and zero chemical potential. The three-loop result to is [a lovely formula. Get th…