6533b873fe1ef96bd12d555c

RESEARCH PRODUCT

Modelling of Boltzmann transport equation for freeze-out

K. TamosiunasK. TamosiunasA. NyiriEtele MolnárVolodymyr MagasLászló P. Csernai

subject

PhysicsThermal equilibriumNuclear and High Energy PhysicsWork (thermodynamics)Yield (engineering)Molecular chaosStatistical physicsSpatial homogeneityPhysics::Classical PhysicsKinetic energyBoltzmann equation

description

The freeze-out (FO) in high-energy heavy-ion collisions is assumed to be continuous across finite layer in space–time. Particles leaving local thermal equilibrium start to freeze out gradually till they leave the layer, where all the particles are frozen out. To describe such a kinetic process we start from Boltzmann transport equation (BTE). However, we will show that the basic assumptions of BTE, such as molecular chaos or spatial homogeneity do not hold for the above-mentioned FO process. The aim of the presented work is to analyse the situation, discuss the modification of BTE and point out the physical causes, which yield to these modifications of BTE for describing FO.

yearjournalcountryeditionlanguage
2005-05-23Journal of Physics G: Nuclear and Particle Physics
https://doi.org/10.1088/0954-3899/31/6/046