Bose-Einstein condensation in binary mixture of Bose gases

摘要

The Bose-Einstein condensation (BEC) in a binary mixture of Bosegases is studied by means of the Cornwall-Jackiw-Tomboulis (CJT)effective action approach. The equations of state (EoS) and variousscenarios of phase transitions of the system are considered indetail, in particular, the numerical computations are carried outfor symmetry restoration (SR), symmetry nonrestoration (SNR)and inverse symmetry breaking (ISB) for getting an insight intotheir physical nature. It is shown that due to the cross interactionbetween distinct components of mixture there occur two interest-ing phenomena: the high temperature BEC and the inverse BEC,which could be tested in experiments.