Hydrodynamics with a chiral hadronic equation of state including quark degrees of freedom

Abstract

We investigate the influence of a deconfinement phase transition on the dynamics of hot and dense nuclear matter. We apply a hybrid model where an intermediate hydrodynamics stage is employed for the the hot and dense stage of a system created in head-on collisions of Pb+Pb/Au+Au at beam energies from $2-160A$GeV. The initial and final interactions are performed by a microscopic transport approach (UrQMD). An equation of state that incorporates a critical end point (CEP) in line with lattice data is used. It follows from coupling the Polyakov loop (as an order parameter for deconfinement) to a chiral hadronic $SU(3{)}_f$ model. In this configuration the EoS describes chiral restoration as well as the deconfinemt phase transition. We compare the results obtained in this approach to results from a non interacting hadron resonance gas, focussing on observables deemed to be sensitive to the phase transition to the quark gluon plasma.

Published version

References in corpus (11)

• Fully integrated transport approach to heavy ion reactions with an intermediate hydrodynamic stage
• Suppression of elliptic flow in a minimally viscous quark-gluon plasma
• Space-time evolution of bulk QCD matter
• Causal Viscous Hydrodynamics for Central Heavy-Ion Collisions
• Mass ordering of differential elliptic flow and its violation for phi mesons
• Dynamical phase trajectories for relativistic nuclear collisions
• (3+1)-Dimensional Hydrodynamic Expansion with a Critical Point from Realistic Initial Conditions
• Directed and elliptic flow in heavy ion collisions from $E_{\mathrm{beam}}=90$ MeV/nucleon to $E_{c.m.}=200$ GeV/nucleon
• Effects of a phase transition on HBT correlations in an integrated Boltzmann+Hydrodynamics approach
• $<m_T>$ excitation function: Freeze-out and equation of state dependence
• Strangeness production at SPS energies

Cited by in corpus (50)

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