Hydrodynamics and collective behaviour in relativistic nuclear collisions

Abstract

Hydrodynamics is applied to describe the dynamics of relativistic heavy-ion collisions. The focus of the present study is the influence of a possible (phase) transition to the quark-gluon plasma in the nuclear matter equation of state on collective observables, such as the lifetime of the system and the transverse directed flow of matter. It is shown that such a transition leads to a softening of the equation of state, and consequently to a time-delayed expansion which is in principle observable via two-particle correlation functions. Moreover, the delayed expansion leads to a local minimum in the excitation function of transverse directed flow around AGS energies.

Parton/hadron dynamics in heavy-ion collisions at FAIR energies

“…Thus, in agreement with the STAR experimental data, in the considered energy range the PHSD model predicts for protons a smooth F( √ s NN ) function which is flattening at √ s NN ≥ 10 GeV and reveals no signatures of a possible first-order phase transition as expected in Refs. [20][21][22][23][24][25][26]. For antiprotons the slope at midrapidity manifests a wide but shallow negative minimum for √ s NN ≈30 GeV while the measured slope is a monotonically increasing function.…”

Comparison of Source Images for Protons,π−’s, andΛ’s in6A GChung1, Ajitanand2, Alexander3 et al. 2003Phys. Rev. Lett.27060View full textAdd to dashboardCite

“…The dynamical evolution of this fireball is driven by such fundamental properties as the nuclear Equation of State (EOS) and possibly by a phase transition, e.g., to a Quark Gluon Plasma (QGP) [2,3,4,5,6]. Two-particle correlation studies, for various particle species, provide an important probe of the space-time extent of this fireball [7,8,9,10].…”

“…of Chemistry and Physics, SUNY Stony Brook, New York 11794-3400 (2) Livermore National Laboratory, Livermore, CA 94550 (3) Ohio State University, Columbus, Ohio 43210 (4) National Superconducting Cyclotron Laboratory, Michigan State University, East Lansing, MI 48824 (5) Kent State University, Kent, Ohio 44242 (6) University of California, Davis, California, 95616 (7) Lawrence Berkeley National Laboratory, Berkeley, California, 94720 (8) Purdue University, West Lafayette, Indiana, 47907-1396 (9) Carnegie Mellon University, Pittsburgh, Pennsylvania 15213 (10) Brookhaven National Laboratory, Upton, New York 11973 (11) University of Auckland, Auckland, New Zealand (12) Columbia University, New York, New York 10027 (13) St. Mary's College, Moraga, California 94575 (14) Harbin Institute of Technology, Harbin, 150001 P. R. China Source images are extracted from two-particle correlations constructed from strange and nonstrange hadrons produced in 6 AGeV Au + Au collisions. Very different source images result from pp vs pΛ vs π − π − correlations.…”

Pion Interferometry ofsNN=130GeVAu+Adler1, Ahammed2, Allgower3 et al. 2001Phys. Rev. Lett.2070100View full textAdd to dashboardCite

“…We are particularly interested in possible indications that a quark gluon plasma (QGP) has been formed in the collision. Several authors [1,[4][5][6][7][8] have proposed HBT studies to probe for a significant increase in the pion emission timescale associated with QGP formation.…”