1206.4824 (Ryuuichi Hotta et al.)

Contribution from the interaction Hamiltonian to the expectation value
of particle number with the non-equilibrium quantum field theory    [PDF]

Ryuuichi Hotta, Takuya Morozumi, Hiroyuki Takata

We develop the method analyzing particle number non-conserving phenomena with non-equilibrium quantum field theory. In this study, we consider a CP violating model with interaction Hamiltonian that breaks particle number conservation. To derive the quantum Boltzmann equation for the particle number, we solve Schwinger-Dyson equation, which are obtained from two particle irreducible closed-time-path (2PI CTP) effective action. In this calculation, we show the contribution from interaction Hamiltonian to the time evolution of expectation value of particle number.

View original: http://arxiv.org/abs/1206.4824