Understanding complex perturbative effective potentials

descriptionPublicationkeyboard_double_arrow_right Article 15 Oct 1987 English Publisher:American Physical Society (APS)Journal:Physical Review D, volume 36, pages 2,474-2,480 (issn: 0556-2821,

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Authors: , Weinberg; , Wu;

doi: 10.1103/physrevd.36.2474

pmid: 9958456

Understanding complex perturbative effective potentials

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Abstract

We examine the situation where the perturbatively calculated effective potential develops an imaginary part. We show that his imaginary part has a natural interpretation as a decay rate per unit volume of a well-defined state and that it agrees quantitatively with an independent calculation of this rate. We examine in some detail the nature of this decay process.

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