dorsal/arxiv
View SchemaAntisymmetrized molecular dynamics of wave packets with stochastic incorporation of Vlasov equation
| Authors | Akira Ono, Hisashi Horiuchi |
|---|---|
| Categories | |
| ArXiv ID | nucl-th/9601008 |
| URL | https://arxiv.org/abs/nucl-th/9601008 |
| DOI | 10.1103/PhysRevC.53.2958 |
| Journal | Phys.Rev.C53:2958-2972,1996 |
Abstract
On the basis of the antisymmetrized molecular dynamics (AMD) of wave packets for the quantum system, a novel model (called AMD-V) is constructed by the stochastic incorporation of the diffusion and the deformation of wave packets which is calculated by Vlasov equation without any restriction on the one-body distribution. In other words, the stochastic branching process in molecular dynamics is formulated so that the instantaneous time evolution of the averaged one-body distribution is essentially equivalent to the solution of Vlasov equation. Furthermore, as usual molecular dynamics, AMD-V keeps the many-body correlation and can naturally describe the fluctuation among many channels of the reaction. It is demonstrated that the newly introduced process of AMD-V has drastic effects in heavy ion collisions of 40Ca + 40Ca at 35 MeV/nucleon, especially on the fragmentation mechanism, and AMD-V reproduces the fragmentation data very well. Discussions are given on the interrelation among the frameworks of AMD, AMD-V and other microscopic models developed for the nuclear dynamics.
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"abstract": "On the basis of the antisymmetrized molecular dynamics (AMD) of wave packets\nfor the quantum system, a novel model (called AMD-V) is constructed by the\nstochastic incorporation of the diffusion and the deformation of wave packets\nwhich is calculated by Vlasov equation without any restriction on the one-body\ndistribution. In other words, the stochastic branching process in molecular\ndynamics is formulated so that the instantaneous time evolution of the averaged\none-body distribution is essentially equivalent to the solution of Vlasov\nequation. Furthermore, as usual molecular dynamics, AMD-V keeps the many-body\ncorrelation and can naturally describe the fluctuation among many channels of\nthe reaction. It is demonstrated that the newly introduced process of AMD-V has\ndrastic effects in heavy ion collisions of 40Ca + 40Ca at 35 MeV/nucleon,\nespecially on the fragmentation mechanism, and AMD-V reproduces the\nfragmentation data very well. Discussions are given on the interrelation among\nthe frameworks of AMD, AMD-V and other microscopic models developed for the\nnuclear dynamics.",
"arxiv_id": "nucl-th/9601008",
"authors": [
"Akira Ono",
"Hisashi Horiuchi"
],
"categories": [
"nucl-th"
],
"doi": "10.1103/PhysRevC.53.2958",
"journal_ref": "Phys.Rev.C53:2958-2972,1996",
"title": "Antisymmetrized molecular dynamics of wave packets with stochastic incorporation of Vlasov equation",
"url": "https://arxiv.org/abs/nucl-th/9601008"
},
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