Density-functional theory for fermions close to the unitary regime

被引：26

作者：

Bhattacharyya, Anirban ^{[1
]}

Papenbrock, T.

机构：

[1] Univ Tennessee, Dept Phys & Astron, Knoxville, TN 37996 USA

[2] Oak Ridge Natl Lab, Div Phys, Oak Ridge, TN 37831 USA

来源：

PHYSICAL REVIEW A | 2006年 / 74卷 / 04期

关键词：

D O I：

10.1103/PhysRevA.74.041602

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We consider interacting Fermi systems close to the unitary regime and compute the corrections to the energy density that are due to a large scattering length and a small effective range. Our approach exploits the universality of the density functional and determines the corrections from the analyical results for the harmonically trapped two-body system. The corrections due to the finite scattering length compare well with the result of Monte Carlo simulations. We also apply our results to symmetric neutron matter.

引用

页数：4

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