N. Loebl, A. S. Umar, J. A. Maruhn, P. -G. Reinhard, P. D. Stevenson, V. E. Oberacker
We study the equilibration and relaxation processes within the time-dependent
Hartree-Fock approach using the Wigner distribution function. On the technical
side we present a geometrically unrestricted framework which allows us to
calculate the full six-dimensional Wigner distribution function. With the
removal of geometrical constraints, we are now able to extend our previous
phase-space analysis of heavy-ion collisions in the reaction plane to
unrestricted mean-field simulations of nuclear matter on a three-dimensional
Cartesian lattice. From the physical point of view we provide a quantitative
analysis on the stopping power in TDHF. This is linked to the effect of
transparency. For the medium-heavy $^{40}$Ca+$^{40}$Ca system we examine the
impact of different parametrizations of the Skyrme force, energy-dependence,
and the significance of extra time-odd terms in the Skyrme functional. For the
first time, transparency in TDHF is observed for a heavy system,
$^{24}$Mg+$^{208}$Pb.
View original:
http://arxiv.org/abs/1201.5269
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