Net baryon number fluctuations across the chiral phase transition at finite density in the strong coupling lattice QCD

Abstract

We investigate the net-baryon number fluctuations across the chiral phase transition at finite density in the strong coupling and chiral limit. Mesonic field fluctuations are taken into account by using the auxiliary field Monte-Carlo method. We find that the higher-order cumulant ratios, $S\sigma$ and $\kappa {\sigma }^2$, show oscillatory behavior around the phase boundary at $\mu /T\gtrsim 0.2$, and there exists the region where the higher-order cumulant ratios are negative. The negative region of $\kappa {\sigma }^2$ is found to shrink with increasing lattice size. This behavior agrees with the expectations from the scaling analysis.

16 pages, 5 figures

References in corpus (25)

• Exact evolution equation for the effective potential
• The order of the quantum chromodynamics transition predicted by the standard model of particle physics
• Probing freeze-out conditions in heavy ion collisions with moments of charge fluctuations
• Freeze-out Conditions in Heavy Ion Collisions from QCD Thermodynamics
• Susceptibilities and the Phase Structure of a Chiral Model with Polyakov Loops
• 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
• The QCD phase diagram at nonzero quark density
• Additional Strange Hadrons from QCD Thermodynamics and Strangeness Freeze-out in Heavy Ion Collisions
• The renormalization group and quark number fluctuations in the Polyakov loop extended quark-meson model at finite baryon density
• The melting and abundance of open charm hadrons
• On the scaling behavior of the chiral phase transition in QCD in finite and infinite volume
• Thermodynamics and fluctuations of conserved charges in Hadron Resonance Gas model in finite volume
• Fluctuation of strongly interacting matter in Polyakov Nambu Jona-Lasinio model in finite volume
• Kurtosis and compressibility near the chiral phase transition
• Critical endpoint of finite temperature phase transition for three flavor QCD
• Wilson Fermion Determinant in Lattice QCD
• Net-baryon number fluctuations in (2+1)-flavor QCD
• Phase diagram evolution at finite coupling in strong coupling lattice QCD
• Chiral and deconfinement transitions in strong coupling lattice QCD with finite coupling and Polyakov loop effects
• Generalized quark number susceptibilities from fugacity expansion at finite chemical potential for $N_f$ = 2 Wilson fermions
• Recent lattice QCD results and phase diagram of strongly interacting matter
• Probing the QCD phase diagram with fluctuations
• Momentum scale dependence of the net quark number fluctuations near chiral crossover
• The thermodynamics of heavy light hadrons at freezeout

Cited by in corpus (8)

• NNNLO pressure of cold quark matter: leading logarithm
• Examination of directed flow as a signature of the softest point of the equation of state in QCD matter
• Functional renormalization group analysis of the soft mode at the QCD critical point
• Polyakov--Nambu--Jona-Lasinio model in finite volumes
• Path optimization in 0+1 dimensional QCD at finite density
• Centrality dependence of chemical freeze-out parameters from net-proton and net-charge fluctuations using hadron resonance gas model
• Fourier coefficients of the net-baryon number density and chiral criticality
• Approaches to QCD phase diagram; effective models, strong-coupling lattice QCD, and compact stars