Dynamical formation of the unitary Bose gas

V.E. Colussi; S. Musolino; S.J.J.M.F. Kokkelmans

doi:10.48550/arXiv.1805.06808

Dynamical formation of the unitary Bose gas

V.E. Colussi, S. Musolino, S.J.J.M.F. Kokkelmans

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Abstract

We study the structure of a Bose-condensed gas after quenching interactions to unitarity. Using the method of cumulants, we decompose the evolving gas in terms of clusters. Within the quantum depletion we observe the emergence of two-body clusters bound purely by many-body effects, scaling continuously with the atomic density. As the unitary Bose gas forms, three-body Efimov clusters are first localized and then sequentially absorbed into the embedded atom-molecule scattering continuum of the surrounding depletion. These results motivate future experimental probes of a quenched Bose-condensate during evolution at unitarity.

Original language	English
Article number	1805.06808v1
Number of pages	10
Journal	arXiv.org, e-Print Archive, Physics
Volume	2018
DOIs	https://doi.org/10.48550/arXiv.1805.06808
Publication status	Published - May 2018

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abstract = "We study the structure of a Bose-condensed gas after quenching interactions to unitarity. Using the method of cumulants, we decompose the evolving gas in terms of clusters. Within the quantum depletion we observe the emergence of two-body clusters bound purely by many-body effects, scaling continuously with the atomic density. As the unitary Bose gas forms, three-body Efimov clusters are first localized and then sequentially absorbed into the embedded atom-molecule scattering continuum of the surrounding depletion. These results motivate future experimental probes of a quenched Bose-condensate during evolution at unitarity. ",

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AB - We study the structure of a Bose-condensed gas after quenching interactions to unitarity. Using the method of cumulants, we decompose the evolving gas in terms of clusters. Within the quantum depletion we observe the emergence of two-body clusters bound purely by many-body effects, scaling continuously with the atomic density. As the unitary Bose gas forms, three-body Efimov clusters are first localized and then sequentially absorbed into the embedded atom-molecule scattering continuum of the surrounding depletion. These results motivate future experimental probes of a quenched Bose-condensate during evolution at unitarity.

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JO - arXiv.org, e-Print Archive, Physics

JF - arXiv.org, e-Print Archive, Physics

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Dynamical formation of the unitary Bose gas

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