AN IMPROVED EFFECTIVE POTENTIAL APPROACH TO DYNAMICAL SYMMETRY BREAKING

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Communications in Theoretical Physics ›› 1984, Vol. 3 ›› Issue (2) : 251-256.

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AN IMPROVED EFFECTIVE POTENTIAL APPROACH TO DYNAMICAL SYMMETRY BREAKING

Yu-ping KUANG¹, Xiao-yuan LI², Zhi-Yong ZHAO³

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Abstract

We have developed, in this paper, a method for evaluating effective potential for local composite fields based on loop expansion by first renormalizing the generating functional of connected Green's functions and then making the Leqendre transformation. A consistency condition reflecting the fact that no condensate effect occurs at tree level is proposed, which plays an important role in this method. The method is illustrated through the Gross-Neveu model. This method can be applied to a wider class of models than can the auxiliary field method.

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Yu-ping KUANG, Xiao-yuan LI, Zhi-Yong ZHAO . AN IMPROVED EFFECTIVE POTENTIAL APPROACH TO DYNAMICAL SYMMETRY BREAKING[J]. Communications in Theoretical Physics, 1984, 3(2): 251-256

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