The Effective Potential for Composite Operator in the Scalar Model at Finite Temperature
نویسندگان
چکیده
We discuss the φ and φ theory defined in a flat D-dimensional space-time. We assume that the system is in equilibrium with a thermal bath at temperature β−1. To obtain non-perturbative result, the 1/N expansion is used. The method of the composite operator (CJT) for summing a large set of Feynman graphs, is developed for the finite temperature system. The ressumed effective potential and the analysis of the D = 3 and D = 4 cases are given.
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تاریخ انتشار 2001