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UNIVERSITY OF BUCHAREST
FACULTY OF PHYSICS Guest
2024-11-23 18:09 |
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Conference: Bucharest University Faculty of Physics 2009 Meeting
Section: Theoretical Physics and Applied Mathematics Seminar
Title:
Dynamical Features of Nuclear and Subnuclear Matter from Coulomb Barrier to Relativistic Energies
Authors:
V. Baran
Affiliation:
University of Bucharest, Physics Faculty, Department of Theoretical Physics and Mathematics
E-mail
virbaran@yahoo.com
Keywords:
nuclear matter, multifragmentation, giant dipole resonance, transport models.
Abstract:
We explore within a microscopic transport approach, of Boltzmann-Landau-Vlasov type for Fermi liquids, several phenomena manifested in heavy ions collisions and discuss how these help us to extract important properties of nuclear matter in various conditions of density, temperature and isospin and to learn about the involved reaction mechanisms.
At low beam energies the dynamical dipole mode manifests as a pre-equilibrium collective motion sensitive to the reaction dynamics and symmetry energy. The properties of Giant Dipole Resonance in hot nuclei can provide hints about a possible transition between zero and first sound in two components Fermi liquids. At intermediate energies, between 30 and 70 MeV/nucleon the nuclear multifragmentation and transition to neck fragmentation is sensitive to the asymmetric nuclear matter Equation of State and nucleon-nucleon cross-sections.
Finally, at relativistic energies we present the predictions of a transport model for quark degrees of freedom, which includes both a Nambu-Jona-Lasinio interaction determining the spontaneous breaking of chiral symmetry and a two-body collision term, on the expansion properties of quark-gluon plasma.
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