We investigate several aspects of chiral symmetry in QCD at a temperature of T=128 MeV. The study is based on a 24×963 lattice-QCD ensemble with O(a)-improved Wilson quarks and physical up, down and strange quark masses. The pion quasiparticle turns out to be significantly lighter than the zero-temperature pion mass, even though the corresponding static correlation length is shorter. We perform a quantitative comparison of our findings to predictions of chiral perturbation theory. Among several order parameters for chiral symmetry restoration, we compute the difference of the vector- and axial-vector time-dependent correlators and find it to be reduced by a factor ∼2/3 as compared to its vacuum counterpart.

Cè, M., Harris, T., Krasniqi, A., Meyer, H., Török, C. (2023). Aspects of chiral symmetry in QCD at T=128 MeV. PHYSICAL REVIEW D, 107(5) [10.1103/PhysRevD.107.054509].

Aspects of chiral symmetry in QCD at T=128 MeV

Cè, Marco.;Harris, Tim;
2023

Abstract

We investigate several aspects of chiral symmetry in QCD at a temperature of T=128 MeV. The study is based on a 24×963 lattice-QCD ensemble with O(a)-improved Wilson quarks and physical up, down and strange quark masses. The pion quasiparticle turns out to be significantly lighter than the zero-temperature pion mass, even though the corresponding static correlation length is shorter. We perform a quantitative comparison of our findings to predictions of chiral perturbation theory. Among several order parameters for chiral symmetry restoration, we compute the difference of the vector- and axial-vector time-dependent correlators and find it to be reduced by a factor ∼2/3 as compared to its vacuum counterpart.
Articolo in rivista - Articolo scientifico
Lattice QCD
English
2023
107
5
054509
open
Cè, M., Harris, T., Krasniqi, A., Meyer, H., Török, C. (2023). Aspects of chiral symmetry in QCD at T=128 MeV. PHYSICAL REVIEW D, 107(5) [10.1103/PhysRevD.107.054509].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/10281/426338
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