1998/10/31 by Klaus Morawetz, Václav Špička, P. Lipavský +5
Physics and Astronomy · #Boltzmann equation #Cold Atom Physics and Bose-Einstein Condensates #Collision #High-Energy Particle Collisions Research #Physics #Quantum #Quantum mechanics #Quantum nonlocality #Quantum, superfluid, helium dynamics #Statistical physics #Virial coefficient #Virial expansion #Virial theorem #nucl-th
paper · pdf · doi:10.1103/physrevlett.82.3767
published as Phys.Rev.Lett. 82 (1999) 3767-3770
arxiv created 1999/01/08 · openalex publication_date 1999/05/10 · arxiv updated 2009/12/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Within quantum molecular dynamics (QMD) simulations we demonstrate the effect of virial corrections on heavy ion reactions. Unlike in standard codes, the binary collisions are treated as nonlocal so that the contribution of the collision flux to the reaction dynamics is covered. A comparison with standard QMD simulations shows that the virial corrections lead to a broader proton distribution bringing theoretical spectra closer towards experimental values. Complementary Boltzmann-Uehling-Uhlenbeck simulations reveal that the nonlocality enhances the collision rate in the early stage of the reaction. It suggests that the broader distribution appears due to an enhanced preequilibrium emission of particles.