CERN Accelerating science

Article
Report number	arXiv:1305.7052
Title	Relativistic viscous hydrodynamics for heavy-ion collisions with ECHO-QGP
Author(s)	Del Zanna, L (Florence U. ; INFN, Florence ; Arcetri Observ.) ; Chandra, V (INFN, Florence) ; Inghirami, G (Florence U. ; INFN, Florence) ; Rolando, V (Ferrara U. ; INFN, Ferrara) ; Beraudo, A (CERN) ; De Pace, A (INFN, Turin) ; Pagliara, G (Ferrara U. ; INFN, Ferrara) ; Drago, A (Ferrara U. ; INFN, Ferrara) ; Becattini, F (Florence U. ; INFN, Florence ; Frankfurt U., FIAS)
Publication	2013
Imprint	30 May 2013
Number of pages	22
Note	Comments: 22 pages, 23 figures
In:	Eur. Phys. J. C (2013) 73: 2524
DOI	10.1140/epjc/s10052-013-2524-5
Subject category	Nuclear Physics - Theory
Abstract	We present ECHO-QGP, a numerical code for $(3+1)$-dimensional relativistic viscous hydrodynamics designed for the modeling of the space-time evolution of the matter created in high energy nuclear collisions. The code has been built on top of the \emph{Eulerian Conservative High-Order} astrophysical code for general relativistic magneto-hydrodynamics [\emph{Del Zanna et al., Astron. Astrophys. 473, 11, 2007}] and here it has been upgraded to handle the physics of the Quark-Gluon Plasma. ECHO-QGP features second-order treatment of causal relativistic viscosity effects in both Minkowskian or Bjorken coordinates; partial or complete chemical equilibrium of hadronic species before kinetic freeze-out; initial conditions based on the optical Glauber model, including a Monte-Carlo routine for event-by-event fluctuating initial conditions; a freeze-out procedure based on the Cooper-Frye prescription. The code is extensively validated against several test problems and results always appear accurate, as guaranteed by the combination of the conservative (shock-capturing) approach and the high-order methods employed. ECHO-QGP can be extended to include evolution of the electromagnetic fields coupled to the plasma.

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