Critical lensing and kurtosis near a critical point in the QCD phase diagram in and out-of-equilibrium

Abstract

In this work, we study the lensing effect of the QCD critical point on hydrodynamic trajectories, and its consequences on the net-proton kurtosis ${\kappa }_4$. Including critical behavior by means of the BEST Collaboration equation of state (EoS), we first consider a scenario in equilibrium, then compare with hydrodynamic 0+1D simulations with Bjorken expansion, including both shear and bulk viscous terms. We find that, both in and out-of-equilibrium, the size and shape of the critical region directly affect if the signal will survive through the dynamical evolution.

References in corpus (55)

• Viscosity in Strongly Interacting Quantum Field Theories from Black Hole Physics
• The order of the quantum chromodynamics transition predicted by the standard model of particle physics
• Computational complexity and fundamental limitations to fermionic quantum Monte Carlo simulations
• Viscosity Information from Relativistic Nuclear Collisions: How Perfect is the Fluid Observed at RHIC?
• The QCD crossover at finite chemical potential from lattice simulations
• QCD thermalization: Ab initio approaches and interdisciplinary connections
• Susceptibilities near the QCD (tri)critical point
• Dynamic universality class of the QCD critical point
• Critical point in the phase diagram of primordial quark-gluon matter from black hole physics
• Neutron Star Equation of State in light of GW190814
• Strongly Intensive Quantities
• Stable and causal relativistic Navier-Stokes equations
• Locating the critical endpoint of QCD: mesonic backcoupling effects
• On the hydrodynamic attractor of Yang-Mills plasma
• Relativistic nuclear collisions: Establishing a non-critical baseline for fluctuation measurements
• Proton number fluctuations in $\sqrt{s_{NN}}$ = 2.4 GeV Au+Au collisions studied with HADES
• Nonlinear Constraints on Relativistic Fluids Far From Equilibrium
• Bulk Viscosity driven clusterization of quark-gluon plasma and early freeze-out in relativistic heavy-ion collisions
• Hot and dense quark-gluon plasma thermodynamics from holographic black holes
• Instability of Boost-invariant hydrodynamics with a QCD inspired bulk viscosity
• Relativistic Hydrodynamic Attractors with Broken Symmetries: Non-Conformal and Non-Homogeneous
• Off-diagonal correlators of conserved charges from lattice QCD and how to relate them to experiment
• On the scaling behavior of the chiral phase transition in QCD in finite and infinite volume
• Thermally Fluctuating Second-Order Viscous Hydrodynamics and Heavy-Ion Collisions
• Connecting fluctuation measurements in heavy-ion collisions with the grand-canonical susceptibilities
• Non-equilibrium attractor in high-temperature QCD plasmas
• Fast Equilibration of Hadrons in an Expanding Fireball
• Proton number cumulants and correlation functions in Au-Au collisions at $\sqrt{s_{\mathrm{NN}}}=7.7-200$ GeV from hydrodynamics
• Future Physics Perspectives on the Equation of State from Heavy Ion Collisions to Neutron Stars
• Bulk and shear viscosities of hot and dense hadron gas
• Far-from-equilibrium search for the QCD critical point
• Dynamical systems and nonlinear transient rheology of the far-from-equilibrium Bjorken flow
• Causality violations in realistic simulations of heavy-ion collisions
• QCD Equation of State at Finite Chemical Potentials for Relativistic Nuclear Collisions
• Fluctuation dynamics near the QCD critical point
• ${}^{16}{\mathrm{O}}^{16}\mathrm{O}$ at RHIC and the LHC comparing $\alpha$ clustering vs substructure
• Freezing Out Fluctuations in Hydro+ Near the QCD Critical Point
• Multicomponent relativistic dissipative fluid dynamics from the Boltzmann equation
• Exploring theoretical uncertainties in the hydrodynamic description of relativistic heavy-ion collisions
• Evolution of Non-Gaussian Hydrodynamic Fluctuations
• Dissipative Hydrodynamic Effects on Baryon Stopping
• Quartic cumulant of baryon number in the presence of QCD critical point
• Transverse Velocity Dependence of the Proton-Antiproton Ratio as a Signature of the QCD Critical Endpoint
• Understanding the $p/\pi$ ratio at LHC due to QCD mass spectrum
• Pre-hydrodynamic evolution and its signatures in final-state heavy-ion observables
• Shear viscosity and electric conductivity of a hot and dense QGP with a chiral phase transition
• Chemical equilibration due to heavy Hagedorn states
• Cumulants of multiple conserved charges and global conservation laws
• Scaling functions for the O(4)-model in d=3 dimensions
• Rapidity dependence of proton cumulants and correlation functions
• Building a testable shear viscosity across the QCD phase diagram
• Constraining baryon annihilation in the hadronic phase of heavy-ion collisions via event-by-event fluctuations
• Critical behaviors of the $O(4)$ and $Z(2)$ symmetries in the QCD phase diagram
• Thermodynamic approach to proton number fluctuations in baryon-rich heavy-ion matter created at moderate collision energies
• Characteristic momentum of Hydro+ and a bound on the speed of sound near the QCD critical point

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• Theoretical and Experimental Constraints for the Equation of State of Dense and Hot Matter
• The QCD phase diagram and Beam Energy Scan physics: a theory overview
• Ripples of the QCD Critical Point
• Mapping out the thermodynamic stability of a QCD equation of state with a critical point using active learning
• Nonmonotonic specific entropy on the transition line near the QCD critical point
• Far-off-equilibrium expansion trajectories in the QCD phase diagram
• Chiral symmetry breaking and pion condensation in the early universe
• Far-from-equilibrium attractors with a realistic non-conformal equation of state
• Shear viscosity from perturbative Quantum Chromodynamics to the hadron resonance gas at finite baryon, strangeness, and electric charge densities
• The effects of the QCD critical point on the spectra and flow coefficients of hadrons
• Viscous Gubser flow with conserved charges to benchmark fluid simulations