Weakly interacting Bose gases below the critical temperature
classification
❄️ cond-mat.other
keywords
temperaturebelowbosecriticalalgorithmconditionconsiderconsidered
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We consider a homogeneous non-ideal Bose gas at nonzero temperature in equilibrium below the critical temperature $T_C$ in the framework of finite temperature field theory. An algorithm is described in which a manageable subset of diagrams can be considered which, coupled with a self--consistent condition related to the minimization of the free energy, can be used to obtain physically reasonable results.
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