Thermodynamics of partonic matter in relativistic heavy-ion collisions from a multiphase transport model

Abstract

Using the string melting version of a multiphase transport model, we focus on the evolution of thermodynamic properties of the central cell of parton matter produced in Au$+$Au collisions ranging from 200 GeV down to 2.7 GeV. The temperature and chemical potentials have been calculated based on both Boltzmann and quantum statistics in order to locate their evolution trajectories in the QCD phase diagram. We demonstrate that the trajectories can depend on many physical factors, especially the finite nuclear thickness at lower energies. However, from the evolution of pressure anisotropy, only partial thermalization can be achieved when the partonic systems reach the predicted QCD phase boundary. It provides some helpful insights to studying the QCD phase structure through relativistic heavy-ion collisions.

17 pages, 15 figures, final published version

References in corpus (10)

• The order of the quantum chromodynamics transition predicted by the standard model of particle physics
• The QCD phase structure at finite temperature and density
• QCD at finite chemical potential with six time slices
• Non-monotonic energy dependence of net-proton number fluctuations
• Phase structure of three and four flavor QCD
• Evolution of transverse flow and effective temperatures in the parton phase from a multi-phase transport model
• Equation of state of the hot dense matter in a multi-phase transport model
• Calculating the initial energy density in heavy ion collisions by including the finite nuclear thickness
• Nuclear system size scan for freeze-out properties in relativistic heavy-ion collisions by using a multiphase transport model
• Semi-analytical calculation of the trajectory of relativistic nuclear collisions in the QCD phase diagram

Cited by in corpus (4)

• The shear viscosity of parton matter under anisotropic scatterings
• Optimal collision-energy range for realizing macroscopic high-baryon-density matter
• Probing fluctuations and correlations of strangeness by net-kaon cumulants in Au+Au collisions at $\sqrt{s_{NN}}=7.7$ GeV
• Calculating QCD Phase Diagram Trajectories of Nuclear Collisions using a Semi-analytical Model