Functional approach to derivative expansion of the effective Lagrangian
- 15 November 1985
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review D
- Vol. 32 (10), 2653-2658
- https://doi.org/10.1103/physrevd.32.2653
Abstract
We present a new functional method for calculating higher-derivative terms in the one-loop effective Lagrangian for multicomponent scalar field theories. The general results we obtain are illustrated with explicit calculations for the O(n)-invariant theory.
Keywords
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