Non-perturbative construction of counterterms for 2PI-approximation

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A concise method is presented for the non-perturbative computation of the counterterms renormalising 2PI-actions. The procedure is presented for a real scalar field up to O (λ2) order in the skeleton truncation of Γ2PI with respect to the self-coupling, and in a constant symmetry breaking background. The method is easily generalizable to field theories with arbitrary global symmetry.

Original languageEnglish
Pages (from-to)255c-258c
JournalNuclear Physics A
Issue number1-4
Publication statusPublished - Apr 1 2009



  • 2PI -approximation
  • Bethe-Salpeter equation
  • Renormalisation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

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