(3+1)-dimensional hydrodynamic expansion with a critical point from realistic initial conditions

Steinheimer, Jan; Bleicher, Marcus; Petersen, Hannah; Schramm, Stefan; Stöcker, H.; Zschiesche, D.

doi:10.1103/physrevc.77.034901

Cited by 96 publications

(98 citation statements)

References 86 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The shaded area shows the region of the mixed phase where the system passes through a first order phase transition. The figure suggests that the critical end-point is reached and sampled for beam energies around 160 GeV per nucleon (see [7]). …”

Section: Phase Diagram In the Hadronic Modelmentioning

confidence: 95%

Phase structure of strongly interacting matter and simulations of heavy-ion collisions using a quark-hadron model

Schramm¹,

Steinheimer²,

Dexheimer³

et al. 2010

J. Phys. G: Nucl. Part. Phys.

View full text Add to dashboard Cite

Abstract. We consider the phase structure of hadronic and hadron-quark models at finite temperature and density. The basis for the hadronic part is an extension of a flavor-SU(3) σ − ω model. We study the effect on the phase diagram by adding additional hadronic resonances to the model. With the resulting equation of state we investigate heavy-ion collisions using hydrodynamical simulations. In a combined approach we include quarks and the Polyakov loop field in the calculation and study chiral symmetry restoration and the deconfinement transition. The Model DescriptionA key topic in the study of relativistic heavy-ion collisions is the investigation of the phase structure of highly excited strongly-interacting hadronic and quark matter. This includes the phase transition to a chirally symmetric and deconfined phase at high temperatures and/or densities. From the experimental side one approach to study the transition behavior is to use different beam energies to sample the transition region over a range of excitation energies and densities.At zero chemical potential QCD lattice simulations show a smooth cross-over of the system to a phase with deconfinement and chiral symmetry restoration. Some lattice calculations at finite chemical potential suggest the existence of a critical endpoint of a line of first-order phase transition at T ≈ 160 MeV and µ q ≈ 120 MeV [1]. In the following we investigate the consequences of phase structures of that type by considering chiral hadronic and combined hadron-quark models. The model description of the hadronic system contains the lowest baryonic and mesonic SU(3) multiplets. The interaction of the scalar mesons and baryons generates the vacuum masses of the

show abstract

Section: Phase Diagram In the Hadronic Modelmentioning

confidence: 95%

Phase structure of strongly interacting matter and simulations of heavy-ion collisions using a quark-hadron model

Schramm¹,

Steinheimer²,

Dexheimer³

et al. 2010

J. Phys. G: Nucl. Part. Phys.

View full text Add to dashboard Cite

show abstract

“…This model has been developed in the past years to combine the advantages of hadronic transport theory and ideal fluid dynamics [26]. To account for the non-equilibrium dynamics in the very early stage of the collision in the hybrid model, the UrQMD cascade [4,5] is used to calculate the initial states of the heavy ion collisions each to be used in a subsequent hydrodynamical evolution [27]. The transition from the UrQMD initial state and the hydrodynamical evolution takes place at a time t start = 2R/ γ 2 CM − 1 i.e., after the two Lorentz-contracted nuclei have passed through each other (γ CM is the center-of-mass-frame Lorentz factor, and R is the radius of the nucleus).…”

Section: The Urqmd Hybrid Modelmentioning

confidence: 99%

Heavy quark transport in heavy ion collisions at energies available at the BNL Relativistic Heavy Ion Collider and at the CERN Large Hadron Collider within the UrQMD hybrid model

et al. 2016

View full text Add to dashboard Cite

We have implemented a Langevin approach for the transport of heavy quarks in the UrQMD hybrid model. The UrQMD hybrid approach provides a realistic description of the background medium for the evolution of relativistic heavy ion collisions. We have used two different sets of drag and diffusion coefficients, one based on a T -Matrix approach and one based on a resonance model for the elastic scattering of heavy quarks within the medium. In case of the resonance model we have investigated the effects of different decoupling temperatures of the heavy quarks from the medium, ranging between 130 MeV and 180 MeV. We present calculations of the nuclear modification factor R AA , as well as of the elliptic flow v 2 in Au+Au collisions at √ s N N = 200 GeV and Pb+Pb collisions at √ s N N = 2.76 TeV. To make our results comparable to experimental data at RHIC and LHC we have implemented a Peterson fragmentation and a quark coalescence approach followed by the semileptonic decay of the D-and B-mesons to electrons. We find that our results strongly depend on the decoupling temperature and the hadronization mechanism. At a decoupling temperature of 130 MeV we reach a good agreement with the measurements at both, RHIC and LHC energies, simultaneously for the elliptic flow v 2 and the nuclear modification factor R AA .

show abstract

“…The EoS has been constructed by coupling the Polyakov loop (as an order parameter for deconfinement) to a chiral hadronic SU(3) model. In this configuration the EoS describes chiral restoration as well as the deconfinement phase transition (for more details on the EoS we refer to [12]). …”

Section: Modeling Of Heavy-ion Collisionsmentioning

confidence: 99%

Probing the QCD critical point with relativistic heavy-ion collisions

et al. 2012

View full text Add to dashboard Cite

Abstract:We utilize an event-by-event relativistic hydrodynamic calculation performed at a number of different incident beam energies to investigate the creation of hot and dense QCD matter near the critical point. Using state-of-the-art analysis and visualization tools we demonstrate that each collision event probes QCD matter characterized by a wide range of temperatures and baryo-chemical potentials, making a dynamical response of the system to the vicinity of the critical point very difficult to isolate above the background.PACS (2008)

show abstract

(3+1)-dimensional hydrodynamic expansion with a critical point from realistic initial conditions

Cited by 96 publications

References 86 publications

Phase structure of strongly interacting matter and simulations of heavy-ion collisions using a quark-hadron model

Phase structure of strongly interacting matter and simulations of heavy-ion collisions using a quark-hadron model

Heavy quark transport in heavy ion collisions at energies available at the BNL Relativistic Heavy Ion Collider and at the CERN Large Hadron Collider within the UrQMD hybrid model

Probing the QCD critical point with relativistic heavy-ion collisions

Contact Info

Product

Resources

About