Entropy flow of a perfect fluid in (1+1) hydrodynamics

Details Entropy flow of a perfect fluid in (1+1) hydrodynamics Entropy flow of a perfect fluid in (1+1) hydrodynamics

2008-08-07

arxiv.org/abs/0808.1073v2

Phys.Rev.C78:064909,2008

Physics

Nuclear Physics

Nuclear Theory

17 pages, 2 figures, to appear in Phys.Rev.C

Scientific paper

10.1103/PhysRevC.78.064909

Using the formalism of the Khalatnikov potential, we derive exact general formulae for the entropy flow dS/dy, where y is the rapidity, as a function of temperature for the (1+1) relativistic hydrodynamics of a perfect fluid. We study in particular flows dominated by a sufficiently long hydrodynamic evolution, and provide an explicit analytical solution for dS/dy. We discuss the theoretical implications of our general formulae and some phenomenological applications for heavy-ion collisions.

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