Wigner approach to the semiclassical dynamics of a quantum many-body system:: the dynamic scattering function of 4He

被引：15

作者：

Ciccotti, G ^{[1
]}

Pierleoni, C

Capuani, F

Filinov, VS

机构：

[1] INFM, Rome, Italy

[2] Univ Roma La Sapienza, Dept Phys, I-00185 Rome, Italy

[3] INFM, Laquila, Italy

[4] Univ Aquila, Dept Phys, I-67100 Laquila, Italy

[5] Russian Acad Sci, IVTAN Assoc, High Energy Dens Res Ctr, Moscow, Russia

来源：

COMPUTER PHYSICS COMMUNICATIONS | 1999年 / 121卷

关键词：

D O I：

10.1016/S0010-4655(99)00381-1

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

We review the formulation of time correlation functions for a quantum system at thermal equilibrium within the Wigner formalism of quantum mechanics. We derive their semiclassical limit and sketch a simple algorithm for their computation. We apply such a scheme to study the spectrum of density fluctuations of He-4 in the quantum region although far from the superfluid. Preliminary results compare encouraging well with recent infrared X-ray scattering data. (C) 1999 Elsevier Science B.V. All rights reserved.

引用

页码：452 / 459

页数：8

共 18 条

[1]

Allen M. P., 1987, Computer Simulation of Liquids, DOI DOI 10.1093/OSO/9780198803195.001.0001

[2] AB-INITIO CALCULATIONS FOR HELIUM - A STANDARD FOR TRANSPORT PROPERTY MEASUREMENTS [J].