arXiv:nucl-th/0011029·v1·Nuclear Theory
Dynamical interpretation of chemical freeze-out in heavy ion collisions
V. D. Toneev (1,2)🇩🇪 · J. Cleymans (3)🇿🇦 · E. G. Nikonov (1,2)🇩🇪 · K. Redlich(1,4)🇩🇪 · A. A. Shanenko(2). ((1)Gesellschaft fuer Schwerionenforshung, Darmstadt, Germany; (2)Bogoliubov Laboratory of Theoretical Physics, JINR, Dubna, Moscow Region, Russia; (3)Department of Physics, University of Cape Town, Rondebosch, South Africa; (4)Institute of Theoretical Physics, University of Wroclaw, Wroclaw, Poland)🇷🇺
Abstract
It is demonstrated that there exists a direct correlation between chemical freeze-out point and the softest point of the equation of state where the pressure divided by the energy density, , has a minimum. A dynamical model is given as an example where the passage of the softest point coincides with the condition for chemical freeze-out, namely an average energy per hadron 1 GeV. The sensitivity of the result to the equation of state used is discussed.
Comments: 10 pages, 2 figures