EQUATION OF STATE OF HE-3 SUBMONOLAYERS IN HE-4 FILMS - MULTIPLE-SPECTRA GREEN-FUNCTIONS

被引：15

作者：

ANDERSON, RH ^{[1
]}

MILLER, MD ^{[1
]}

机构：

[1] WASHINGTON STATE UNIV,DEPT PHYS,PULLMAN,WA 99164

来源：

PHYSICAL REVIEW B | 1993年 / 48卷 / 14期

关键词：

D O I：

10.1103/PhysRevB.48.10426

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Utilizing a model effective interaction for He-3 atoms in a He-4 film that consists of two-body potentials, phonon exchange, and ripplon exchange, we calculate the He-3 equation of state. The energy and pressure are determined in the Hartree-Fock approximation allowing for He-3 population of multiple discrete transverse states. In this work we use a two-state approximation and self-consistently solve the matrix Dyson equation for the 2 X 2 self-energy matrix. We find that the many-body self-energy decreases the gap between the lowest and first excited transverse state from the noninteracting model but that no clear evidence exists for a self-bound state.

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页码：10426 / 10434

页数：9

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