Nonextensive hydrodynamics for relativistic heavy-ion collisions

Journal Article · Tue Apr 15 04:00:00 EDT 2008 · Physical Review. C, Nuclear Physics

DOI:https://doi.org/10.1103/PHYSREVC.77.044903· OSTI ID:21189923

Osada, T ^[1]; Wilk, G ^[2]

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1. Theoretical Physics Lab., Faculty of Knowledge Engineering, Musashi Institute of Technology, Setagaya-ku, Tokyo 158-8557 (Japan)
2. Andrzej Soltan Institute for Nuclear Studies, Hoza 69, 00681 Warsaw (Poland)

The nonextensive one-dimensional version of a hydrodynamic model for multiparticle production processes is proposed and discussed. It is based on nonextensive statistics assumed in the form proposed by Tsallis and characterized by a nonextensivity parameter q. In this formulation, the parameter q describes some specific form of local equilibrium that is characteristic of the nonextensive thermodynamics and replaces the local thermal equilibrium assumption of the usual hydrodynamic models. We argue that there is correspondence between the perfect nonextensive hydrodynamics and the usual dissipative hydrodynamics. It leads to a simple expression for dissipative entropy current and allows predictions of the ratio of bulk and shear viscosities to entropy density, {zeta}/s and {eta}/s, to be made.

• OSTI ID: 21189923
• Journal Information: Physical Review. C, Nuclear Physics, Journal Name: Physical Review. C, Nuclear Physics Journal Issue: 4 Vol. 77; ISSN 0556-2813; ISSN PRVCAN
• Country of Publication: United States
• Language: English

Related Subjects

73 NUCLEAR PHYSICS AND RADIATION PHYSICS
CURRENTS
ENTROPY
FORECASTING
HEAVY ION REACTIONS
HYDRODYNAMIC MODEL
ONE-DIMENSIONAL CALCULATIONS
RELATIVISTIC RANGE
STATISTICS
THERMAL EQUILIBRIUM
THERMODYNAMICS
VISCOSITY