Thermalization in Heavy-Ion Collisions

Details Thermalization in Heavy-Ion Collisions Thermalization in Heavy-Ion Collisions

2008-02-04

arxiv.org/abs/0802.0259v2

Ukr.J.Phys.53:87-97,2008

Physics

Nuclear Physics

Nuclear Theory

12 pages, 4 figures; added references, corrected typos, added explanatory figures, extended discussion

Scientific paper

We propose a model for isotropization and corresponding thermalization in a nucleon system created in the collision of two nuclei. The model is based on the assumption: during the fireball evolution, two-particle elastic and inelastic collisions give rise to the randomization of the nucleon-momentum transfer which is driven by a proper distribution. As a first approximation, we assume a homogeneous distribution where the values of the momentum transfer is bounded from above. These features have been shown to result in a smearing of the particle momenta about their initial values and, as a consequence, in their partial isotropization and thermalization. The nonequilibrium single-particle distribution function and single-particle spectrum which carry a memory about initial state of nuclei have been obtained.

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