Validating the 2PI resummation: The Bloch-Nordsieck example

A. Jakovác, P. Mati

Research output: Contribution to journalArticle

7 Citations (Scopus)


In this work, we provide a numerical method to obtain the Bloch-Nordsieck spectral function at finite temperature in the framework of the 2-particle-irreducible (2PI) approximation. We find that the 2PI results nicely agree with the exact one, provided we perform a coupling constant matching. In the paper, we present the resulting finite temperature running of the 2PI coupling constant. This result may apply for the finite temperature behavior of the coupling constant in QED, too.

Original languageEnglish
JournalPhysical Review D - Particles, Fields, Gravitation and Cosmology
Issue number4
Publication statusPublished - Aug 27 2014


ASJC Scopus subject areas

  • Nuclear and High Energy Physics
  • Physics and Astronomy (miscellaneous)

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