Strangeness Neutrality and QCD Thermodynamics

Abstract

Since the incident nuclei in heavy-ion collisions do not carry strangeness, the global net strangeness of the detected hadrons has to vanish. We investigate the impact of strangeness neutrality on the phase structure and thermodynamics of QCD at finite baryon and strangeness chemical potential. To this end, we study the low-energy sector of QCD within a Polyakov loop enhanced quark-meson effective theory with 2+1 dynamical quark flavors. Non-perturbative quantum, thermal, and density fluctuations are taken into account with the functional renormalization group. We show that the impact of strangeness neutrality on thermodynamic quantities such as the equation of state is sizable.

21 pages, 24 figures

References in corpus (24)

• Exact evolution equation for the effective potential
• The equation of state in (2+1)-flavor QCD
• Equation of state and QCD transition at finite temperature
• The Phase Structure of the Polyakov--Quark-Meson Model
• Infrared Properties of QCD from Dyson-Schwinger equations
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• 2+1 Flavor Polyakov--Nambu--Jona-Lasinio Model at Finite Temperature and Nonzero Chemical Potential
• The renormalization group and quark number fluctuations in the Polyakov loop extended quark-meson model at finite baryon density
• Renormalization Group Approach towards the QCD Phase Diagram
• Improved Polyakov-loop potential for effective models from functional calculations
• Exact flow equation for composite operators
• Fluctuations in the quark-meson model for QCD with isospin chemical potential
• The QCD Phase Boundary from Quark-Gluon Dynamics
• Baryon number fluctuations at finite temperature and density
• Inhomogeneous phases in the quark-meson model with vacuum fluctuations
• Determination of QCD phase diagram from the imaginary chemical potential region
• QCD thermodynamics with 2+1 flavors at nonzero chemical potential

Cited by in corpus (19)

• The nonperturbative functional renormalization group and its applications
• QCD at finite temperature and chemical potential from Dyson-Schwinger equations
• QCD phase structure from functional methods
• Chiral phase structure and critical end point in QCD
• Symmetric nuclear matter from the strong interaction
• Hyper-order baryon number fluctuations at finite temperature and density
• QCD at finite temperature and density within the fRG approach: An overview
• Hybrid and quark star matter based on a non-perturbative equation of state
• QCD Equation of State at Finite Chemical Potentials for Relativistic Nuclear Collisions
• Shocks and quark-meson scatterings at large density
• Ripples of the QCD Critical Point
• Phase structure of 2+1-flavour QCD and the magnetic equation of state
• Real-time dynamics of the $O(4)$ scalar theory within the fRG approach
• Hyperon--anti-hyperon polarization asymmetry in relativistic heavy-ion collisions as an interplay between chiral and helical vortical effects
• Critical behaviors of the $O(4)$ and $Z(2)$ symmetries in the QCD phase diagram
• Thermodynamics from the quark condensate
• Role of the conserved charges in the chiral symmetry restoration phase transition
• Probing fluctuations and correlations of strangeness by net-kaon cumulants in Au+Au collisions at $\sqrt{s_{NN}}=7.7$ GeV
• Lattice-based equation of state with a critical point from constant entropy contours and its comparison to effective QCD approaches