Formal Proof of an Exact Scale Invariance in the Nambu-Jona-Lasinio Model
classification
✦ hep-th
keywords
modelnambu-jona-lasiniorenormalizationscaleaccordinglybetacompositenesscondition
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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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