Journal
ATOMS
Volume 7, Issue 1, Pages -Publisher
MDPI
DOI: 10.3390/atoms7010019
Keywords
efimov effect; strongly correlated systems; ultracold gases; non-perturbative methods; Tan contact
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Funding
- Nederlandse Organisatie voor Wetenschappelijk Onderzoek (NWO) [680-47-623]
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The two- and three-body contacts are central to a set of univeral relations between microscopic few-body physics within an ultracold Bose gas and its thermodynamical properties. They may also be defined in trapped few-particle systems, which is the subject of this work. In this work, we focus on the unitary three-body problem in a trap, where interactions are as strong as allowed by quantum mechanics. We derive analytic results for the two- and three-body contacts in this regime and compare them with existing limiting expressions and previous numerical studies.
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