Two-Loop Effective Action for Theories with Fermions
arXiv:hep-th/9412066 · doi:10.1006/aphy.1995.1068
Abstract
On the basis of a new approach proposed in our previous work we develope a formalism for calculating of the effective action for some models containing fermion fields. This method allows us to calculate the fermionic part of the effective action (up to two-loop level) properly. The two-loop contribution to the effective potential for the Nambu-Jona-Lasinio model is calculated and is shown to vanish.
23 pages, latex