Two and Three-body Contacts in the Unitary Bose Gas
Quantum Gases
2017-01-30 v1
Abstract
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. Here, using Ramsey interferometry, we study coherent evolution of the resonantly interacting Bose gas, and show 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.
Keywords
Cite
@article{arxiv.1608.04377,
title = {Two and Three-body Contacts in the Unitary Bose Gas},
author = {Richard J. Fletcher and Raphael Lopes and Jay Man and Nir Navon and Robert P. Smith and Martin W. Zwierlein and Zoran Hadzibabic},
journal= {arXiv preprint arXiv:1608.04377},
year = {2017}
}
Comments
4 pages, 4 figures and Supplementary Materials of 7 pages, 4 figures