Next-to-next-to-leading-order ε expansion for a Fermi gas at infinite scattering length

被引：44

作者：

Arnold, Peter

Drut, Joaquin E.

Son, Dam Thanh

机构：

[1] Univ Virginia, Dept Phys, Charlottesville, VA 22904 USA

[2] Univ Washington, Inst Nucl Theory, Seattle, WA 98195 USA

来源：

PHYSICAL REVIEW A | 2007年 / 75卷 / 04期

关键词：

D O I：

10.1103/PhysRevA.75.043605

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We extend previous work on applying the epsilon expansion to universal properties of a cold, dilute Fermi gas in the unitary regime of infinite scattering length. We compute the ratio xi=mu/epsilon(F) of chemical potential to ideal gas Fermi energy to next-to-next-to-leading-order (NNLO) in epsilon=4-d, where d is the number of spatial dimensions. We also explore the nature of corrections from the order after NNLO.

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页数：15

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