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arXiv · 0810.2262

On freeze-out problem in relativistic hydrodynamics

Yu. B. Ivanov·V. N. Russkikh
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Abstract

A finite unbound system which is equilibrium in one reference frame is in general nonequilibrium in another frame. This is a consequence of the relative character of the time synchronization in the relativistic physics. This puzzle was a prime motivation of the Cooper--Frye approach to the freeze-out in relativistic hydrodynamics. Solution of the puzzle reveals that the Cooper--Frye recipe is far not a unique phenomenological method that meets requirements of energy-momentum conservation. Alternative freeze-out recipes are considered and discussed.

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Yu. B. Ivanov, V. N. Russkikh. 2008-12-07. On freeze-out problem in relativistic hydrodynamics. https://doi.org/10.1134/s1063778809070187

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