Journal
SCIENCE
Volume 355, Issue 6323, Pages 377-+Publisher
AMER ASSOC ADVANCEMENT SCIENCE
DOI: 10.1126/science.aai8195
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Funding
- U.K. Engineering and Physical Sciences Research Council [EP/N011759/1]
- European Research Council (QBox)
- U.S. Army Research Office (ARO)
- U.S. Air Force Office of Scientific Research (AFOSR)
- Trinity College, Cambridge
- Royal Society
- European Union Marie Curie program [MSCA-IF-2015 704832]
- AFOSR Multidisciplinary University Research Initiative on exotic quantum phases
- U.S. NSF
- ARO
- EPSRC [EP/N011759/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/N011759/1, 1492093, 1102563] Funding Source: researchfish
- Division Of Physics
- Direct For Mathematical & Physical Scien [1125846] Funding Source: National Science Foundation
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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.
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