STRUCTURAL AND DYNAMICAL PROPERTIES OF SUPERFLUID-HELIUM - A DENSITY-FUNCTIONAL APPROACH

被引：301

作者：

DALFOVO, F ^{[1
]}

LASTRI, A ^{[1
]}

PRICAUPENKO, L ^{[1
]}

STRINGARI, S ^{[1
]}

TREINER, J ^{[1
]}

机构：

[1] INST PHYS NUCL LYON, DIV PHYS THEOR, F-91406 ORSAY, FRANCE

来源：

PHYSICAL REVIEW B | 1995年 / 52卷 / 02期

关键词：

D O I：

10.1103/PhysRevB.52.1193

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We present a density functional for liquid He-4, properly accounting for the static response function and the phonon-roton dispersion in the uniform liquid. The functional is used to study both structural and dynamical properties of superfluid helium in various geometries. The equilibrium properties of the free surface, droplets, and films at zero temperature are calculated. Our predictions agree closely with the results of ab initio Monte Carlo calculations, when available. The introduction of a phenomenological velocity-dependent interaction, which accounts for backflow effects, is discussed. The spectrum of the elementary excitations of the free surface and films is studied.

引用

页码：1193 / 1209

页数：17

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