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- W2017102949 abstract "In a recent experiment with ultracold trapped Rb-85 atoms, Makotyn et al. have studied a quantum-degenerate Bose gas in the unitary limit where its scattering length is infinitely large. We show that the observed momentum distributions are compatible with a universal relation that expresses the high-momentum tail in terms of the 2-body and the 3-body contacts. We determine the 2- and 3-body contact densities for the unitary Bose gas with number density n to be approximately 20n^{4/3} and 2n^{5/3}, respectively. We also show that the observed atom loss rate is compatible with that from 3-atom inelastic collisions, which gives a contribution proportional to the 3-body contact, but the loss rate is not compatible with that from 2-atom inelastic collisions, which gives a contribution proportional to the 2-body contact. We point out that the contacts could be measured independently by using the virial theorem near and at unitarity." @default.
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- W2017102949 date "2014-03-17" @default.
- W2017102949 modified "2023-10-18" @default.
- W2017102949 title "Two-Body and Three-Body Contacts for Identical Bosons near Unitarity" @default.
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- W2017102949 doi "https://doi.org/10.1103/physrevlett.112.110402" @default.
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