Comparison of multifragmentation dynamical models

J. Rizzo, M. Colonna, and A. Ono
Phys. Rev. C 76, 024611 – Published 27 August 2007

Abstract

Multifragmentation scenarios, as predicted by antisymmetrized molecular dynamics (AMD) or momentum-dependent stochastic mean-field (BGBD) calculations are compared. Whereas in the BGBD case fragment emission is clearly linked to the spinodal decomposition mechanism (i.e., to mean-field instabilities), in AMD many-body correlations have a stronger impact on the fragmentation dynamics. In fact, the density and momentum fluctuations develop earlier in AMD, suggesting that fragments are formed on shorter time scales in AMD, on about equal footing as light-particle pre-equilibrium emission.

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  • Received 18 September 2006

DOI:https://doi.org/10.1103/PhysRevC.76.024611

©2007 American Physical Society

Authors & Affiliations

J. Rizzo1,2, M. Colonna1,2, and A. Ono3

  • 1LNS-INFN, I-95123 Catania, Italy
  • 2Physics and Astronomy Department, University of Catania, Italy
  • 3Department of Physics, Tohoku University, Sendai 980-8578, Japan

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Vol. 76, Iss. 2 — August 2007

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