Metastability of quantum droplet clusters
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10.1103/PhysRevLett.122.193902
Inclou dades d'ús des de 2022
Cita com:
hdl:2117/134948
Tipus de documentArticle
Data publicació2019-05-14
EditorAmerican Institute of Physics (AIP)
Condicions d'accésAccés obert
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Abstract
We show that metastable ring-shaped clusters can be constructed from two-dimensional quantum droplets in systems described by the Gross-Pitaevskii equations augmented with Lee-Huang-Yang quantum corrections. The clusters exhibit dynamical behaviours ranging from contraction to rotation with simultaneous periodic pulsations, or expansion, depending on the initial radius of the necklace pattern and phase shift between adjacent quantum droplets. We show that, using an energy-minimization analysis, one can predict equilibrium values of the cluster radius that correspond to rotation without radial pulsations. In such a regime, the clusters evolve as metastable states, withstanding abrupt variations in the underlying scattering lengths and keeping their azimuthal symmetry in the course of evolution, even in the presence of considerable perturbations.
CitacióKartashov, Y.V.; Malomed, B.; Torner, L. Metastability of quantum droplet clusters. "Physical review letters", 14 Maig 2019, vol. 122, p. 193902-1-193902-7.
ISSN1079-7114
Versió de l'editorhttps://journals.aps.org/prl/abstract/10.1103/PhysRevLett.122.193902
Altres identificadorshttps://arxiv.org/abs/1904.10050
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