Interplay of anisotropies of momentum distribution and mean field in heavy-ion collisions

• Verfasst von: Simon, Christian [VerfasserIn]
• Verfasst von: Danielewicz, Pawel [VerfasserIn]
• Titel: Interplay of anisotropies of momentum distribution and mean field in heavy-ion collisions
• Verf.angabe: Christian H. Simon and Paweł Danielewicz
• Jahr: 2013
• Umfang: 9 S.
• Fussnoten: Published 28 May 2013 ; Gesehen am 02.02.2022
• Titel Quelle: Enthalten in: Physical review / C
• Ort Quelle: Woodbury, NY : Inst., 1970
• Jahr Quelle: 2013
• Band/Heft Quelle: 87(2013), 5, Artikel-ID 054619, Seite 1-9
• ISSN Quelle: 1089-490X
• DOI: doi:10.1103/PhysRevC.87.054619
• Datenträger: Online-Ressource
• Sprache: eng
• K10plus-PPN: 1788350715

Abstract

Background: Two important parametrizations of momentum-dependent nucleonic fields, proposed for the simulations of central heavy-ion collisions, one by Gale et al. [Phys. Rev. C 35, 1666 (1987)] and the other by Welke et al. [Phys. Rev. C 38, 2101 (1988)], suffer from practical limitations. The first gives rise to mean fields isotropic in momentum, even when underlying momentum distributions are anisotropic, making descriptions of early nonequilibrium stages of collisions unrealistic. The second parametrization gives rise to anisotropic mean fields, but is computationally expensive, because the mean field has to be computed separately for every location of a nucleon in phase space, through folding.