Progress on the QCD deconfinement critical point for Nf=2 staggered fermions

  • The global center symmetry of quenched QCD at zero baryonic chemical potential is broken spontaneously at a critical temperature Tc leading to a first-order phase transition. Including heavy dynamical quarks breaks the center symmetry explicitly and weakens the first-order phase transition for decreasing quark masses until it turns into a smooth crossover at a Z(2)-critical point. We investigate the Z(2)-critical quark mass value towards the continuum limit for Nf=2 flavors using lattice QCD in the staggered formulation. As part of a continued study, we present results from Monte-Carlo simulations on Nτ=8,10 lattices. Several aspect ratios and quark mass values were simulated in order to obtain the critical mass from a fit of the Polyakov loop to a kurtosis finite size scaling formula. Moreover, the possibility to develop a Ginzburg-Landau effective theory around the Z(2)-critical point is explored.

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Author:Reinhold KaiserORCiD, Owe PhilipsenORCiDGND
ArXiv Id:
Document Type:Conference Proceeding
Date of Publication (online):2022/12/29
Date of first Publication:2022/12/29
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Contributing Corporation:International Symposium on Lattice Field Theory (39. : 2022 : Bonn)
Release Date:2023/01/24
Page Number:9
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoCreative Commons - CC BY-NC - Namensnennung - Nicht kommerziell 4.0 International