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Abstract:

We study the dynamics of three-dimensional weakly linked Bose-Einstein condensates using a multimode model with an effective interaction parameter. The system is confined by a ring-shaped four-well trapping potential. By constructing a two-mode Hamiltonian in a reduced highly symmetric phase space, we examine the periodic orbits and calculate their time periods both in the self-trapping and Josephson regimes. The dynamics in the vicinity of the reduced phase space is investigated by means of a Floquet multiplier analysis, finding regions of different linear stability and analyzing their implications on the exact dynamics. The numerical exploration in an extended region of the phase space demonstrates that two-mode tools can also be useful for performing a partition of the space in different regimes. Comparisons with Gross-Pitaevskii simulations confirm these findings and emphasize the importance of properly determining the effective on-site interaction parameter governing the multimode dynamics. © 2018 American Physical Society.

Registro:

Documento: Artículo
Título:Dynamics in multiple-well Bose-Einstein condensates
Autor:Nigro, M.; Capuzzi, P.; Cataldo, H.M.; Jezek, D.M.
Filiación:Universidad de Buenos Aires, Facultad de Ciencias Exactas y Naturales, Departamento de Física, Buenos Aires, Argentina and IFIBA, Ciudad Universitaria, CONICET-UBA, Pabellón 1, Buenos Aires, 1428, Argentina
Palabras clave:Bose-Einstein condensation; Phase space methods; Statistical mechanics; Bose-Einstein condensates; Effective interaction parameters; Floquet multiplier; Multimode dynamics; Multimode models; Numerical exploration; Site interaction; Trapping potential; Dynamics
Año:2018
Volumen:97
Número:1
DOI: http://dx.doi.org/10.1103/PhysRevA.97.013626
Título revista:Physical Review A
Título revista abreviado:Phys. Rev. A
ISSN:24699926
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_24699926_v97_n1_p_Nigro

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Citas:

---------- APA ----------
Nigro, M., Capuzzi, P., Cataldo, H.M. & Jezek, D.M. (2018) . Dynamics in multiple-well Bose-Einstein condensates. Physical Review A, 97(1).
http://dx.doi.org/10.1103/PhysRevA.97.013626
---------- CHICAGO ----------
Nigro, M., Capuzzi, P., Cataldo, H.M., Jezek, D.M. "Dynamics in multiple-well Bose-Einstein condensates" . Physical Review A 97, no. 1 (2018).
http://dx.doi.org/10.1103/PhysRevA.97.013626
---------- MLA ----------
Nigro, M., Capuzzi, P., Cataldo, H.M., Jezek, D.M. "Dynamics in multiple-well Bose-Einstein condensates" . Physical Review A, vol. 97, no. 1, 2018.
http://dx.doi.org/10.1103/PhysRevA.97.013626
---------- VANCOUVER ----------
Nigro, M., Capuzzi, P., Cataldo, H.M., Jezek, D.M. Dynamics in multiple-well Bose-Einstein condensates. Phys. Rev. A. 2018;97(1).
http://dx.doi.org/10.1103/PhysRevA.97.013626