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Formal Proof of an Exact Scale Invariance in the Nambu-Jona-Lasinio Model

Keiichi Akama

hep-tharXiv:hep-th/0312152

Abstract

We show that the renormalization group beta functions in the Nambu-Jona-Lasinio model identically vanish in all order due to the compositeness condition. Accordingly the effective coupling constants are entirely fixed and do not run with the renormalization scale.

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