Nucleus- and particle-nucleus collisions in the Giessen Boltzmann-Uehling-Uhlenbeck model (GiBUU)
Seminars
Seminar on Theory of hadronic matter under extreme conditions
Date and Time: Tuesday, 25 December 2018, at 11:30 AM
Venue: Blokhintsev Hall (4th floor), Bogoliubov Laboratory of Theoretical Physics
Seminar topic: “Nucleus- and particle-nucleus collisions in the Giessen Boltzmann-Uehling-Uhlenbeck model (GiBUU)”
Speaker: A.B. Larionov (Institut fur Kernphysik, Forschungszentrum, Julich; FIAS, Frankfurt am Main; NRC “Kurchatov Institute”, Moscow)
Abstract:
Microscopic transport approach can be applied to a broad range of inclusive nuclear reactions, where the quantum states of the outgoing nuclear systems are not resolved. The latter condition facilitates the use of single-particle distribution functions, i.e. Wigner functions in 6-dimensional phase space. In the semiclassical approximation, the time evolution of a Wigner function for the system of fermions is described by the BoltzmannUehling-Uhlenbeck equation which includes the mean field potential and collision term with Pauli blocking factors. The most powerful method to solve this equation is based on the test particle method and the Monte-Carlo simulation of the collision term. Based on this method, a large number of numerical models have been developed. GiBUU is one of the most elaborated microscopic hadronic transport models. The basic features of the GiBUU model will be presented. The applications of the model to heavy-ion collisions at the beam energies of 1-40 GeV, to antiproton- and photon-nucleus reactions will be discussed.