Time evolution of the anisotropies of the hydrodynamically expanding SQGP

A. Bagoly, M. Csanád

Research output: Contribution to journalArticle


In high energy heavy ion collisions of RHIC and LHC, a strongly interacting quark gluon plasma (sQGP) is created. This medium undergoes a hydrodynamic evolution, before it freezes out to form a hadronic matter. The initial state of the sQGP is determined by the initial distribution of the participating nucleons and their interactions. Due to the finite number of nucleons, the initial distribution fluctuates on an event-by-event basis. The transverse plane anisotropy of the initial state can be translated into a series of anisotropy coefficients or eccentricities: second, third, fourth-order anisotropy etc. These anisotropies then evolve in time, and result in measurable momentum-space anisotropies, to be measured with respect to their respective symmetry planes. In this paper we investigate the time evolution of the anisotropies. With a numerical hydrodynamic code, we analyze how the speed of sound and viscosity influence this evolution.

Original languageEnglish
Article number1645016
JournalInternational Journal of Modern Physics A
Issue number28-29
Publication statusPublished - Oct 20 2016


  • Heavy ion collisions
  • azimuthal anisotropy
  • equation of state
  • numerical hydrodynamics

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Nuclear and High Energy Physics
  • Astronomy and Astrophysics

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