Bjorken hydrodynamics and gradual freeze out

  • The freeze out of the expanding systems, created in relativistic heavy ion collisions, is discussed. We combine kinetic freeze out equations with Bjorken type system expansion into a unified model. The important feature of the proposed scenario is that physical freeze out is completely finished in a finite time, which can be varied from 0 (freeze out hypersurface) to infinit. The dependence of the post freeze out distribution function on the freeze out time will be studied. Model allows analytical analyses for the simplest systems such as pion gas. We shall see that the basic freeze out features, pointed out in the earlier works, are not smeared out by the expansion of the system. The entropy evolution in such a scenario is also studied.

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Author:Volodymyr MagasORCiD, László Pal CsernaiORCiDGND, Etele MolnárORCiD
Parent Title (German):Proceedings of Science, Critical Point and Onset of Deconfinement, July 3 - 6 2006, Florence, Italy
Document Type:Article
Year of Completion:2006
Year of first Publication:2006
Publishing Institution:Universitätsbibliothek Johann Christian Senckenberg
Release Date:2007/06/14
Copyright owned by the author(s) under the terms of the Creative Commons Attribution-NonCommercial-ShareAlike Licence.
Source:Proceedings of Science (CPOD2006)031. - Critical Point and Onset of Deconfinement, July 3 - 6 2006, Florence, Italy
Institutes:Physik / Physik
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):License LogoDeutsches Urheberrecht