Title

Derivative expansion for the one-loop effective actions with internal symmetry

Document Type

Article

Publication Date

1-1-1986

Abstract

A simple systematic method is presented for the evaluation of the derivative expansion of the functional determinant with covariant differential operators, space-time-dependent background fields, and internal symmetry. The results are directly applicable to the one-loop perturbative effective-action expansion for bosons and fermions. Derivative expansions up to four-derivative terms for Trln[-Π2+U(X)] and the effective action of the SO(N) linear σ model are calculated. © 1986 The American Physical Society.

Publication Source (Journal or Book title)

Physical Review Letters

First Page

1199

Last Page

1202

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