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Beyond-mean-field crossover from one dimension to three dimensions in quantum droplets of binary mixtures

L. Lavoine 1 Thomas Bourdel 1
1 Laboratoire Charles Fabry / Gaz Quantiques
LCF - Laboratoire Charles Fabry
Abstract : The existence of quantum droplets in binary Bose-Einstein condensate mixtures rely on beyond-mean field effects, competing with mean-field-effects. Interestingly, the beyond-mean-field effects change from repulsive in three dimension (3D) to attractive in 1D leading to drastically different behaviors. We quantitatively model quantum droplets in the beyond-mean-field crossover from 1D to 3D in the relevant case of an elongated harmonic trap and give realistic numbers for experimental realizations. We identify and quantify two main limiting factors: three-body losses and tiny energy scales. The crossover region is appealing as it offers a trade-off between these two main limitations opening the possibility of observing stable flat-top density profiles, a yet unobserved, characteristic feature of quantum droplets. It would permit testing beyond-mean-field theories to an unprecedented precision.
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https://hal.archives-ouvertes.fr/hal-03021471
Contributor : Thomas Bourdel Connect in order to contact the contributor
Submitted on : Thursday, March 18, 2021 - 9:58:28 AM
Last modification on : Tuesday, January 4, 2022 - 6:06:55 AM

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L. Lavoine, Thomas Bourdel. Beyond-mean-field crossover from one dimension to three dimensions in quantum droplets of binary mixtures. Physical Review A, American Physical Society 2021, 103 (3), pp.033312. ⟨10.1103/PhysRevA.103.033312⟩. ⟨hal-03021471v2⟩

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