Validating the 2PI resummation: The Bloch-Nordsieck example

A. Jakovác, P. Mati

Research output: Contribution to journalArticle

6 Citations (Scopus)

Abstract

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
Volume90
Issue number4
DOIs
Publication statusPublished - Aug 27 2014

Fingerprint

temperature
approximation

ASJC Scopus subject areas

  • Nuclear and High Energy Physics

Cite this

Validating the 2PI resummation : The Bloch-Nordsieck example. / Jakovác, A.; Mati, P.

In: Physical Review D - Particles, Fields, Gravitation and Cosmology, Vol. 90, No. 4, 27.08.2014.

Research output: Contribution to journalArticle

@article{5f9494101e4c41ff91b3f43a3903e33d,
title = "Validating the 2PI resummation: The Bloch-Nordsieck example",
abstract = "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.",
author = "A. Jakov{\'a}c and P. Mati",
year = "2014",
month = "8",
day = "27",
doi = "10.1103/PhysRevD.90.045038",
language = "English",
volume = "90",
journal = "Physical review D: Particles and fields",
issn = "1550-7998",
publisher = "American Institute of Physics Publising LLC",
number = "4",

}

TY - JOUR

T1 - Validating the 2PI resummation

T2 - The Bloch-Nordsieck example

AU - Jakovác, A.

AU - Mati, P.

PY - 2014/8/27

Y1 - 2014/8/27

N2 - 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.

AB - 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.

UR - http://www.scopus.com/inward/record.url?scp=84940309157&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=84940309157&partnerID=8YFLogxK

U2 - 10.1103/PhysRevD.90.045038

DO - 10.1103/PhysRevD.90.045038

M3 - Article

AN - SCOPUS:84940309157

VL - 90

JO - Physical review D: Particles and fields

JF - Physical review D: Particles and fields

SN - 1550-7998

IS - 4

ER -