Physical origin of the universal three-body parameter in atomic Efimov physics

被引：71

作者：

Naidon, Pascal ^{[1
]}

Endo, Shimpei ^{[2
]}

Ueda, Masahito ^{[2
]}

机构：

[1] RIKEN, Nishina Ctr, Wako, Saitama 3510198, Japan

[2] Univ Tokyo, Dept Phys, Bunkyo Ku, Tokyo 1130033, Japan

来源：

PHYSICAL REVIEW A | 2014年 / 90卷 / 02期

关键词：

BOUND-STATES; BODY PROBLEM; SCATTERING; SYSTEM; PARTICLES; RESONANCE; FORCES;

D O I：

10.1103/PhysRevA.90.022106

中图分类号：

O43 [光学];

学科分类号：

070207 ; 0803 ;

摘要：

We address the microscopic origin of the universal three-body parameter that fixes the spectrum of three-atom systems in the Efimov regime. We identify it with the van der Waals two-body correlation, which causes the three-atom system to deform when the three atoms come within the distance of the van der Waals length, effectively preventing them from coming closer due to the kinetic-energy cost associated with three-body deformation. This deformation mechanism explains the universal ratio of the scattering length at the triatomic resonance to the van der Waals length observed in several experiments and confirmed by numerical calculations.

引用

页数：9

共 49 条

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