Physics – Nuclear Physics – Nuclear Theory
Scientific paper
2008-10-02
Physical Review C 78 (2008) 064604-1-6
Physics
Nuclear Physics
Nuclear Theory
Accepted in Physical Review C
Scientific paper
10.1103/PhysRevC.78.064604
Model calculations that include the effects of irreversible, environmental couplings on top of a coupled-channels dynamical description of the collision of two complex nuclei are presented. The Liouville-von Neumann equation for the time-evolution of the density matrix of a dissipative system is solved numerically providing a consistent transition from coherent to decoherent (and dissipative) dynamics during the collision. Quantum decoherence and dissipation are clearly manifested in the model calculations. Energy dissipation, due to the irreversible decay of giant-dipole vibrational states of the colliding nuclei, is shown to result in a hindrance of quantum tunneling and fusion.
Dasgupta Mahananda
Diaz-Torres Alexis
Hinde David
Milburn Gerard
Tostevin Jeff
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