Journal Article

FZJ-2021-06097

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png QCD transition at the physical point, and its scaling window from twisted mass Wilson fermions

Kotov, A. Y. (Corresponding author)FZJ* ; Lombardo, M. P. ; Trunin, A.

2021
North-Holland Publ. Amsterdam

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Please use a persistent id in citations: http://hdl.handle.net/2128/29647  doi:10.1016/j.physletb.2021.136749

Abstract: We study the scaling properties of the finite temperature QCD phase transition, for light quark masses ranging from the heavy quark regime to their physical values. The lattice results are obtained in the fixed scale approach from simulations of Nf = 2 + 1 + 1 flavours of Wilson fermions at maximal twist. We identify an order parameter free from the linear contributions in mass due to additive renormalization and regular terms in the Equation of State, which proves useful for the assessment of the hypothesized universal behaviour. We find compatibility with the 3D O (4) universality class for the physical pion mass and temperatures 120 MeV ≲ T ≲ 300 MeV. We discuss violation of scaling at larger masses and a possible cross-over to mean field behaviour. The chiral extrapolation T0 = 134-4+6 MeV of the pseudocritical temperature is robust against predictions of different universality classes and consistent with its estimate from the O (4) Equation of State for the physical pion mass.

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Contributing Institute(s):

1. Jülich Supercomputing Center (JSC)

Research Program(s):

1. 5111 - Domain-Specific Simulation & Data Life Cycle Labs (SDLs) and Research Groups (POF4-511) (POF4-511)

Appears in the scientific report 2021

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Database coverage:
; ; ; ; ; Clarivate Analytics Master Journal List ; Current Contents - Physical, Chemical and Earth Sciences ; DOAJ Seal ; Ebsco Academic Search ; Essential Science Indicators ; IF < 5 ; JCR ; Nationallizenz ; SCOAP3 sponsored Journal ; SCOPUS ; Science Citation Index Expanded ; Web of Science Core Collection

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