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QCD mesonic screening masses up to high temperatures

We discuss a strategy to study non-perturbatively QCD up to very high temperatures by Monte Carlo simulations on the lattice. It allows not only the thermodynamic properties of the theory but also other interesting thermal features to be investigated. As a first concrete application, we compute th...

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Detalles Bibliográficos
Autores principales: Dalla Brida, Mattia, Giusti, Leonardo, Harris, Tim, Laudicina, Davide, Pepe, Michele
Lenguaje:eng
Publicado: 2022
Materias:
Acceso en línea:https://dx.doi.org/10.22323/1.414.0829
http://cds.cern.ch/record/2847554
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author Dalla Brida, Mattia
Giusti, Leonardo
Harris, Tim
Laudicina, Davide
Pepe, Michele
author_facet Dalla Brida, Mattia
Giusti, Leonardo
Harris, Tim
Laudicina, Davide
Pepe, Michele
author_sort Dalla Brida, Mattia
collection CERN
description We discuss a strategy to study non-perturbatively QCD up to very high temperatures by Monte Carlo simulations on the lattice. It allows not only the thermodynamic properties of the theory but also other interesting thermal features to be investigated. As a first concrete application, we compute the flavour non-singlet mesonic screening masses and we present the results of Monte Carlo simulations at 12 temperatures covering the range from T $\sim$ 1 GeV up to $\sim$ 160 GeV in the theory with three massless quarks. On the one side, chiral symmetry restoration manifests itself in our results through the degeneracy of the vector and the axial vector channels and of the scalar and the pseudoscalar ones, and, on the other side, we observe a clear splitting between the vector and the pseudoscalar screening masses up to the highest investigated temperature. A comparison with the high-temperature effective theory shows that the known one-loop order in the perturbative expansion does not provide a satisfactory description of the non-perturbative data up to the highest temperature considered.
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institution Organización Europea para la Investigación Nuclear
language eng
publishDate 2022
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spelling cern-28475542023-09-15T02:09:17Zdoi:10.22323/1.414.0829http://cds.cern.ch/record/2847554engDalla Brida, MattiaGiusti, LeonardoHarris, TimLaudicina, DavidePepe, MicheleQCD mesonic screening masses up to high temperatureshep-latParticle Physics - LatticeWe discuss a strategy to study non-perturbatively QCD up to very high temperatures by Monte Carlo simulations on the lattice. It allows not only the thermodynamic properties of the theory but also other interesting thermal features to be investigated. As a first concrete application, we compute the flavour non-singlet mesonic screening masses and we present the results of Monte Carlo simulations at 12 temperatures covering the range from T $\sim$ 1 GeV up to $\sim$ 160 GeV in the theory with three massless quarks. On the one side, chiral symmetry restoration manifests itself in our results through the degeneracy of the vector and the axial vector channels and of the scalar and the pseudoscalar ones, and, on the other side, we observe a clear splitting between the vector and the pseudoscalar screening masses up to the highest investigated temperature. A comparison with the high-temperature effective theory shows that the known one-loop order in the perturbative expansion does not provide a satisfactory description of the non-perturbative data up to the highest temperature considered.We discuss a strategy to study non-perturbatively QCD up to very high temperatures by Monte Carlo simulations on the lattice. It allows not only the thermodynamic properties of the theory but also other interesting thermal features to be investigated. As a first concrete application, we compute the flavour non-singlet mesonic screening masses and we present the results of Monte Carlo simulations at 12 temperatures covering the range from T $\sim$ 1 GeV up to $\sim$ 160 GeV in the theory with three massless quarks. On the one side, chiral symmetry restoration manifests itself in our results through the degeneracy of the vector and the axial vector channels and of the scalar and the pseudoscalar ones, and, on the other side, we observe a clear splitting between the vector and the pseudoscalar screening masses up to the highest investigated temperature. A comparison with the high-temperature effective theory shows that the known one-loop order in the perturbative expansion does not provide a satisfactory description of the non-perturbative data up to the highest temperature considered.arXiv:2211.11549CERN-TH-2022-198oai:cds.cern.ch:28475542022-11-21
spellingShingle hep-lat
Particle Physics - Lattice
Dalla Brida, Mattia
Giusti, Leonardo
Harris, Tim
Laudicina, Davide
Pepe, Michele
QCD mesonic screening masses up to high temperatures
title QCD mesonic screening masses up to high temperatures
title_full QCD mesonic screening masses up to high temperatures
title_fullStr QCD mesonic screening masses up to high temperatures
title_full_unstemmed QCD mesonic screening masses up to high temperatures
title_short QCD mesonic screening masses up to high temperatures
title_sort qcd mesonic screening masses up to high temperatures
topic hep-lat
Particle Physics - Lattice
url https://dx.doi.org/10.22323/1.414.0829
http://cds.cern.ch/record/2847554
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