Nucleon matter equation of state, particle number fluctuations, and shear viscosity within UrQMD box calculations

作者：Motornenko A^*; Bravina L; Gorenstein M I; Magner A G; Zabrodin E

来源：Journal of Physics G: Nuclear and Particle Physics , 2018, 45(3): 035101.

DOI：10.1088/1361-6471/aaa78a

• nuclear mater
• hadron gas
• excluded volume
• viscosity
• statistical models
• Monte-Carlo simulations

Properties of equilibrated nucleon system are studied within the ultra-relativistic quantum molecular dynamics (UrQMD) transport model. The UrQMD calculations are done within a finite box with periodic boundary conditions. The system achieves thermal equilibrium due to nucleon-nucleon elastic scattering. For the UrQMD-equilibrium state, nucleon energy spectra, equation of state, particle number fluctuations, and shear viscosity eta are calculated. The UrQMD results are compared with both, statistical mechanics and Chapman-Enskog kinetic theory, for a classical system of nucleons with hard-core repulsion.

• 出版日期2018-3