13–17 sept. 2021
São José dos Campos, Brazil
Fuseau horaire America/Sao_Paulo

Renormalization group improved QCD thermodynamics

14 sept. 2021, 16:02
1m
São José dos Campos, Brazil

São José dos Campos, Brazil

Instituto Tecnológico de Aeronáutica
Poster Poster

Orateur

Prof. Marcus Benghi Pinto (Universidade Federal de Santa Catarina)

Description

We use the renormalization group optimized perturbation theory (RGOPT) to evaluate the quark contribution, Pq, to the QCD pressure at NLO (two loop level). In this seminal application the complete QCD pressure is then obtained simply by adding the perturbative NLO contribution from massless gluons to the resummed Pq. At the central scale M∼2πT our complete QCD pressure, P=Pq+Pg, shows a remarkable agreement with lattice predictions for 0.25≲T≲1GeV. As expected, the RG properties native to the RGOPT resummation significantly reduce the embarassing scale dependence that plagues popular analytical methods such as standard thermal perturbative QCD and hard thermal loop perturbation theory (HTLpt).

Auteurs principaux

Prof. Marcus Benghi Pinto (Universidade Federal de Santa Catarina) Dr Jean-Loic Kneur (Université de Montpellier) Dr Tulio Eduardo Restrepo (UFRJ)

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