The QCD phase diagram at nonzero quark density

Abstract

We determine the phase diagram of QCD on the μ-T plane for small to moderate chemical potentials. Two transition lines are defined with two quantities, the chiral condensate and the strange quark number susceptibility. The calculations are carried out on N_t =6,8 and 10 lattices generated with a Symanzik improved gauge and stout-link improved 2+1 flavor staggered fermion action using physical quark masses. After carrying out the continuum extrapolation we find that both quantities result in a similar curvature of the transition line. Furthermore, our results indicate that in leading order the width of the transition region remains essentially the same as the chemical potential is increased.

12 pages, 6 figures

References in corpus (16)

• The order of the quantum chromodynamics transition predicted by the standard model of particle physics
• The QCD equation of state with dynamical quarks
• The QCD transition temperature: results with physical masses in the continuum limit
• The QCD transition temperature: results with physical masses in the continuum limit II.
• Equation of state and QCD transition at finite temperature
• The transition temperature in QCD
• Accelerating Dynamical Fermion Computations using the Rational Hybrid Monte Carlo (RHMC) Algorithm with Multiple Pseudofermion Fields
• QCD at finite chemical potential with six time slices
• Canonical partition function and finite density phase transition in lattice QCD
• The phase boundary for the chiral transition in (2+1)-flavor QCD at small values of the chemical potential
• Lattice QCD as a video game
• 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
• Phase structure of lattice QCD with two flavors of Wilson quarks at finite temperature and chemical potential
• A QCD chiral critical point at small chemical potential: is it there or not?
• Imaginary chemical potentials and the phase of the fermionic determinant

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• Chiral restoration at finite T under the magnetic field with the meson-loop corrections
• Roles of axial anomaly on neutral quark matter with color superconducting phase