Constrained molecular dynamics IT:: An N-body approach to nuclear systems

JOURNAL OF COMPUTATIONAL PHYSICS

卷:208

Article

Papa, M ; Giuliani, G ; Bonasera, A

关键词: constrained equations;    molecular;    dynamics;   

DOI  :  10.1016/j.jcp.2005.02.032

来源: Elsevier

【 摘 要 】

In this work, we illustrate the basic development of the constrained molecular dynamics applied to the N-body problem in nuclear physics. The heavy computational tasks related to quantum effects, to the Fermionic nature of the system have been resolved out by defining a set of transformations based on the concept of impulsive forces. In particular, in the implemented version 11 of the constrained molecular dynamics model the problem related to the non-conservation of the total angular momentum has been solved. This problem affects other semi-classical microscopic approaches due to the hard core repulsive interaction and, more generally, to the usage of random forces. The effect of the restored conservation law on the fusion cross-section for the Ca-40 + Ca-40 system is also briefly discussed. (c) 2005 Elsevier Inc. All rights reserved.

【 授权许可】

Free