The phase diagram of QCD with four degenerate quarks

Abstract

We revisit the determination of the pseudo-critical line of QCD with four degenerate quarks at non-zero temperature and baryon density by the method of analytic continuation. We determine the pseudo-critical couplings at imaginary chemical potentials by high-statistics Monte Carlo simulations and reveal deviations from the simple quadratic dependence on the chemical potential visible in earlier works on the same subject. Finally, we discuss the implications of our findings for the shape of the pseudo-critical line at real chemical potential, comparing different possible extrapolations.

8 pages, 8 figures, 2 tables

References in corpus (10)

• The chiral critical point of Nf=3 QCD at finite density to the order (mu/T)^4
• The strongly interacting Quark Gluon Plasma, and the critical behaviour of QCD at imaginary chemical potential
• Thermodynamics of two flavor QCD from imaginary chemical potentials
• Phase structure of lattice QCD with two flavors of Wilson quarks at finite temperature and chemical potential
• The order of the Roberge-Weiss endpoint (finite size transition) in QCD
• Analytic continuation of the critical line: suggestions for QCD
• How to get from imaginary to real chemical potential
• The critical line from imaginary to real baryonic chemical potentials in two-color QCD
• Imaginary chemical potentials and the phase of the fermionic determinant
• Phase diagram evolution at finite coupling in strong coupling lattice QCD

Cited by in corpus (29)

• Curvature of the chiral pseudo-critical line in QCD: continuum extrapolated results
• Finite-density lattice QCD and sign problem: current status and open problems
• Curvature of the pseudocritical line in QCD: Taylor expansion matches analytic continuation
• Critical line of 2+1 flavor QCD: Toward the continuum limit
• The critical line of two-flavor QCD at finite isospin or baryon densities from imaginary chemical potentials
• On the critical line of 2+1 flavor QCD
• Theta dependence of the deconfinement temperature in Yang-Mills theories
• The Roberge-Weiss endpoint in N_f = 2 QCD
• Imaginary Chemical Potential Approach for the Pseudo-Critical Line in the QCD Phase Diagram with Clover-Improved Wilson Fermions
• Curvature of the chiral pseudo-critical line in QCD
• Nonlocal Polyakov-Nambu-Jona-Lasinio model and imaginary chemical potential
• Finite density phase transition of QCD with $N_f=4$ and $N_f=2$ using canonical ensemble method
• Phase diagram of Yang-Mills theories in the presence of a theta term
• Anomaly matching in QCD thermal phase transition
• Lee-Yang zero distribution of high temperature QCD and Roberge-Weiss phase transition
• Roberge-Weiss endpoint and chiral symmetry restoration in $N_f=2+1$ QCD
• Holographic Roberge-Weiss Transitions
• The QCD phase diagram from analytic continuation
• Quark number densities at imaginary chemical potential in $N_f=2$ lattice QCD with Wilson fermions and its model analyses
• Role of mesonic fluctuations in the Polyakov loop extended quark-meson model at imaginary chemical potential
• Gauge-invariant screening masses and static quark free energies in $N_f=2+1$ QCD at non-zero baryon density
• Dependence of the static quark free energy on ${\mu }_B$ and the crossover temperature of $N_f=2+1$ QCD
• Towards extremely dense matter on the lattice
• Classification of sign-problem-free relativistic fermions on the basis of the Majorana positivity
• INFN What Next: Ultra-relativistic Heavy-Ion Collisions
• Two-flavor QCD at finite quark or isospin density
• Phase diagram of QCD with two degenerate staggered quarks
• The critical line of QCD with four degenerate quarks
• Curvature of the QCD critical line with 2+1 HISQ fermions