Resummation of Goldstone infrared divergences: A proof to all orders

J. R. Espinosa, T. Konstandin

    Research output: Contribution to journalArticleResearchpeer-review

    5 Citations (Scopus)

    Abstract

    © 2018 authors. The perturbative effective potential calculated in Landau gauge suffers from infrared problems due to Goldstone boson loops. These divergences are spurious and can be removed by a resummation procedure that amounts to a shift of the mass of soft Goldstones. We prove this to all loops using an effective theory approach, providing a compact recipe for the shift of the Goldstone mass that relies on the use of the method of regions to split soft and hard Goldstone contributions.
    Original languageEnglish
    Article number054036
    JournalPhysical Review D
    Volume97
    Issue number5
    DOIs
    Publication statusPublished - 1 Mar 2018

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