# Dynamical interpretation of chemical freeze-out in heavy-ion collisions

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### Abstract:

It is demonstrated that there exists a direct correlation between the chemical freeze-out point and the softest point of the equation of state where the pressure divided by the energy density, [iopmath latex="$p(\varepsilon)/\varepsilon$"] p()/ [/iopmath] , 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 of [iopmath latex="$\approx$"] [/iopmath] 1 GeV. The sensitivity of the result to the equation of state used is discussed.

Document Type: Miscellaneous

Affiliations: 1: Gesellschaft für Schwerionenforshung, D-64220 Darmstadt, Germany 2: Department of Physics, University of Cape Town, Rondebosch 7701, South Africa 3: Bogoliubov Laboratory of Theoretical Physics, JINR, 141980 Dubna, Moscow Region, Russia

Publication date: April 1, 2001

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