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arXiv · 1901.10355

Bunching, clustering, and the buildup of few-body correlations in a quenched unitary Bose gas

V. E. Colussi·B. E. van Zwol·J. P. D'Incao·S. J. J. M. F. Kokkelmans
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Abstract

We study the growth of two- and three-body correlations in an ultracold Bose gas quenched to unitarity. This is encoded in the dynamics of the two- and three-body contacts analyzed in this work. Via a set of relations connecting many-body correlations dynamics with few-body models, signatures of the Efimov effect are mapped out as a function of evolution time at unitarity over a range of atomic densities $n$. For the thermal resonantly interacting Bose gas, we find that atom-bunching leads to an enhanced growth of few-body correlations. These atom-bunching effects also highlight the interplay between few-body correlations that occurs before genuine many-body effects enter on Fermi timescales.

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V. E. Colussi, B. E. van Zwol, J. P. D'Incao, S. J. J. M. F. Kokkelmans. 2019-01-30. Bunching, clustering, and the buildup of few-body correlations in a quenched unitary Bose gas. https://doi.org/10.1103/physreva.99.043604

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