QUANTUM GASES Two- and three-body contacts in the unitary Bose gas

被引：87

作者：

Fletcher, Richard J. ^{[1
]}

Lopes, Raphael ^{[1
]}

Man, Jay ^{[1
]}

Navon, Nir ^{[1
]}

Smith, Robert P. ^{[1
]}

Zwierlein, Martin W. ^{[2
,3
]}

Hadzibabic, Zoran ^{[1
]}

机构：

[1] Univ Cambridge, Cavendish Lab, J J Thomson Ave, Cambridge CB3 0HE, England

[2] MIT, MIT Harvard Ctr Ultracold Atoms, Dept Phys, Cambridge, MA 02139 USA

[3] MIT, Elect Res Lab, Cambridge, MA 02139 USA

来源：

SCIENCE | 2017年 / 355卷 / 6323期

基金：

英国工程与自然科学研究理事会; 欧洲研究理事会; 美国国家科学基金会;

关键词：

SYSTEM;

D O I：

10.1126/science.aai8195

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

In many-body systems governed by pairwise contact interactions, a wide range of observables is linked by a single parameter, the two-body contact, which quantifies two-particle correlations. This profound insight has transformed our understanding of strongly interacting Fermi gases. Using Ramsey interferometry, we studied coherent evolution of the resonantly interacting Bose gas, and we show here that it cannot be explained by only pairwise correlations. Our experiments reveal the crucial role of three-body correlations arising from Efimov physics and provide a direct measurement of the associated three- body contact.

引用

页码：377 / +

页数：4

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