Fluctuations of conserved charges in hydrodynamics and molecular dynamics

Abstract

I present an overview of recent theoretical results on fluctuations of conserved charges in heavy-ion collisions obtained in relativistic hydrodynamics and molecular dynamics frameworks. In particular, I discuss the constraints on the location of the QCD critical point based on comparisons of experimental data on proton number cumulants with precision calculations of non-critical contributions. Recent developments on critical fluctuations in molecular dynamics simulations are covered as well.

7 pages, 4 figures, contribution to the proceedings of Strangeness in Quark Matter 2022

References in corpus (14)

• The QCD Equation of State to $\mathcal{O}({\mu }_B^6)$ from Lattice QCD
• Lattice QCD equation of state at finite chemical potential from an alternative expansion scheme
• Cumulants and Correlation Functions of Net-proton, Proton and Antiproton Multiplicity Distributions in Au+Au Collisions at energies available at the BNL Relativistic Heavy Ion Collider
• A collision geometry-based 3D initial condition for relativistic heavy-ion collisions
• Relativistic nuclear collisions: Establishing a non-critical baseline for fluctuation measurements
• Proton number cumulants and correlation functions in Au-Au collisions at $\sqrt{s_{\mathrm{NN}}}=7.7-200$ GeV from hydrodynamics
• Freezing Out Fluctuations in Hydro+ Near the QCD Critical Point
• Particlization of an interacting hadron resonance gas with global conservation laws for event-by-event fluctuations in heavy-ion collisions
• Speed of sound and baryon cumulants in heavy-ion collisions
• Correcting event-by-event fluctuations in heavy-ion collisions for exact global conservation laws with the generalized subensemble acceptance method
• Constraining baryon annihilation in the hadronic phase of heavy-ion collisions via event-by-event fluctuations
• Ambiguities in the hadro-chemical freeze-out of Au+Au collisions at SIS18 energies and how to resolve them
• Thermodynamic approach to proton number fluctuations in baryon-rich heavy-ion matter created at moderate collision energies
• Critical point particle number fluctuations from molecular dynamics