QCD at high temperature and density: selected highlights

Abstract

I review some of the recent progress in QCD at high temperature and density, with a focus on the nature of the high-temperature transition; cold and dense matter; and hadron properties and transport coefficients at high temperature.

arXiv comment12 pages, 8 figures. Plenary presentation at A virtual tribute to Quark Confinement and the Hadron Spectrum, 2-6 August 2021

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• The QCD phase structure at finite temperature and density
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• Finite temperature study of the axial U(1) symmetry on the lattice with overlap fermion formulation
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• Light baryons below and above the deconfinement transition: medium effects and parity doubling
• Lattice QCD constraints on the heavy quark diffusion coefficient
• Microscopic Origin of \boldmath{$U_A(1)$} Symmetry Violation in the High Temperature Phase of QCD
• Determination of alpha_s from the QCD static energy
• A way to estimate the heavy quark thermalization rate from the lattice
• Baryon number fluctuations at finite temperature and density
• Correlated Dirac Eigenvalues and Axial Anomaly in Chiral Symmetric QCD
• Charge transport and vector meson dissociation across the thermal phase transition in lattice QCD with two light quark flavors
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• The dual properties of chiral and isospin asymmetric dense quark matter formed of two-color quarks
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• Equation of state for cold and dense heavy QCD
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• A comparison of spectral reconstruction methods applied to non-zero temperature NRQCD meson correlation functions
• Confronting effective models for deconfinement in dense quark matter with lattice data
• Strong coupling methods in QCD thermodynamics
• Spectral reconstruction details of a gradient-flowed color-electric correlator
• Electromagnetic conductivity of quark-gluon plasma at non-zero baryon density