Coupled-cluster theory of a gas of strongly-interacting fermions in the dilute limit

被引：1

作者：

Mihaila, B. ^{[1
]}

Cardenas, A. ^{[1
,2
]}

机构：

[1] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[2] Cal Poly Pomona, Dept Math, Pomona, CA 91768 USA

来源：

PHILOSOPHICAL MAGAZINE | 2009年 / 89卷 / 22-24期

关键词：

dilute fermion systems; electron gas; equation of state; unitarity limit; MOLECULES; ATOMS;

D O I：

10.1080/14786430802676437

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We study the ground-state properties of a dilute gas of strongly-interacting fermions in the framework of the coupled-cluster expansion (CCE). We demonstrate that properties such as universality, opening of a gap in the excitation spectrum and applicability of s-wave approximations appear naturally in the CCE approach. In the zero-density limit, we show that the ground-state energy density depends on only one parameter, which in turn may depend at most on the spatial dimensionality of the system.

引用

页码：1975 / 1987

页数：13

共 27 条

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