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Abstract: Information on dissipation in the entrance channel of heavy-ion collisions isextracted by macroscopic reduction procedure of Time-Dependent Hartree-Focktheory. The method gives access to a fully microscopic description of thefriction coefficient associated with transfer of energy from the relativemotion towards intrinsic degrees of freedom. The reduced friction coefficientexhibits a universal behavior, i.e. almost independent of systems investigated,whose order of magnitude is comparable with the calculations based on linearresponse theory. Similarly to nucleus-nucleus potential, especially close tothe Coulomb barrier, there are sizable dynamical effects on the magnitude andform factor of friction coefficient.



Autor: Kouhei Washiyama, Denis Lacroix, Sakir Ayik

Fuente: https://arxiv.org/







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