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 IOPP Seminar : Prof. Larisa Bravina and Prof. Evgeny Zabrodin, University of Oslo, Norway, Nov. 14, Thursday, 2:00pm, Room 9409 Time & Place: Nov. 14, Thursday, 2:00pm, Room 9409     Speaker: Prof. Larisa Bravina, University of Oslo, Norway     Title: spatial sub-separation of strangeness from anti-strangeness in heavy-ion collisions at energies of FAIR and NICA      Abstract:      The heavy-ion collisions at energies of FAIR and NICA are studied within    the microscopic transport model. The whole interaction area is    subdivided into the small cells. We perform the analysis of the    space-time evolution of all particles in all cells, in the $T-\mu_B$ and    $T-\mu_S$ planes, and the analysis of the finally emitted strange and    non-strange particles in the $x-t$ plane. Following the time evolution of    all distributions, we clearly see the spacial separation of strangeness    from anti-strangeness, as well as earlier freeze-out times of kaons and    pions compared to those of protons and Lambdas. The latter appear to be    frozen out at lower temperature and larger strangeness chemical potential.*********************************************************************  Time & Place: Nov. 14, Thursday, 2:45 pm, Room 9409     Speaker: Prof. Evgeny ZABRODIN, University of Oslo, Norway     Title: Early thermalization and shear viscosity to entropy ratio in heavy-ion collisions at energies of BES, FAIR and NICA      Abstract: Equilibration of highly excited baryon-rich matter is studied within themicroscopic model calculations in A+A collisions at energies of BES, FAIR and NICA. It is shown that the system evolution from the very beginning of the collision can be approximated by relativistic hydrodynamics, although the hot and dense nuclear matter is not in local equilibrium yet. During the evolution of the fireball the extracted values of energy density, net baryon and net strangeness densities are used as input to Statistical Model (SM) in order to calculate temperature, chemical potentials and entropy density of the system. Also, they are used as an input for the box with periodic boundary conditions to investigate influence of initial cut-off time on momentum correlators in the infinite nuclear matter. Shear viscosityis calculated according to the Green-Kubo formalism. At all energies, shear viscosity to entropy density ratio shows minimum at time corresponding to maximum baryon density. The ratio dependence on the SM temperature, baryon chemical potential and strangeness chemical potential is investigated. Previous：IOPP Seminar : Prof. You Zhou, Niels Bohr Institute, University of Copenhagen, Denmark, Nov. 21, Thursday, 10:00am, Room 9409 Next：IOPP Forum : Prof. Roy Lacey, Stony Brook University (石溪大学）, Nov. 15, Friday, 10:00am, Room 9409

Institute of Particle Phisics;