Excitation spectrum and dynamic structure function of 4He clusters

被引：0

作者：

Chin, S.A. ^{[1
]}

Krotschek, E. ^{[1
]}

机构：

[1] Center for Theoretical Physics, Department of Physics, Texas AM University, College Station, TX 77843, United States

来源：

Physica B: Condensed Matter | 1990年 / 165-66卷 / 01期

基金：

美国国家科学基金会;

关键词：

Computer Programming--Algorithms - Cryogenics--Low Temperature Phenomena - Liquids--Low Temperature Effects - Mathematical Statistics--Monte Carlo Methods;

D O I：

10.1016/0921-4526(90)90657-G

中图分类号：

学科分类号：

摘要：

We compute the collective excitations, transition densities, and the dynamic structure function of 4He droplets at zero temperature using a generalized Feynman ansatz for the excitation function. The theory uses as inputs the exact ground state, one- and two-body densities sampled by a second order Diffusion Monte Carlo algorithm. The dynamic structure function appears to be dominated by the zero sound excitation and its modulation by finite size effects.

引用

页码：531 / 532

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