Self-gravitating bosons at nonzero temperature Original Research Article

A system of charged bosons at finite temperature and chemical potential is studied in a general-relativistic framework. We assume that the boson fields interact only gravitationally. At sufficiently low temperature the system exists in two phases: the gas and the condensate. By studying the condensation process numerically we determine the critical temperature Tc at which the condensate emerges. As the temperature decreases, the system eventually settles down in the ground state of a cold boson star.