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Jezek, D.M.; Capuzzi, P.; Cataldo, H.M. "Two-mode effective interaction in a double-well condensate" (2013) Physical Review A - Atomic, Molecular, and Optical Physics. 87(5)
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Abstract:

We investigate the origin of a disagreement between the two-mode model and the exact Gross-Pitaevskii dynamics applied to double-well systems. In general this model, even in its improved version, predicts a faster dynamics and underestimates the critical population imbalance separating Josephson and self-trapping regimes. We show that the source of this mismatch in the dynamics lies in the value of the on-site interaction energy parameter. Using simplified Thomas-Fermi densities, we find that the on-site energy parameter exhibits a linear dependence on the population imbalance, which is also confirmed by Gross-Pitaevskii simulations. When introducing this dependence in the two-mode equations of motion, we obtain a reduced interaction energy parameter which depends on the dimensionality of the system. The use of this parameter significantly heals the disagreement in the dynamics and also produces better estimates of the critical imbalance. © 2013 American Physical Society.

Registro:

Documento: Artículo
Título:Two-mode effective interaction in a double-well condensate
Autor:Jezek, D.M.; Capuzzi, P.; Cataldo, H.M.
Filiación:IFIBA-CONICET, Pabellón 1, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Departamento de Física, FCEN, Ciudad Universitaria, 1428 Buenos Aires, Argentina
Palabras clave:Double-well systems; Effective interactions; Interaction energy parameters; Josephson; Linear dependence; On-site energy; Self-trapping; Thomas-Fermi; Equations of motion; Dynamics
Año:2013
Volumen:87
Número:5
DOI: http://dx.doi.org/10.1103/PhysRevA.87.053625
Título revista:Physical Review A - Atomic, Molecular, and Optical Physics
Título revista abreviado:Phys Rev A
ISSN:10502947
CODEN:PLRAA
Registro:https://bibliotecadigital.exactas.uba.ar/collection/paper/document/paper_10502947_v87_n5_p_Jezek

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Citas:

---------- APA ----------
Jezek, D.M., Capuzzi, P. & Cataldo, H.M. (2013) . Two-mode effective interaction in a double-well condensate. Physical Review A - Atomic, Molecular, and Optical Physics, 87(5).
http://dx.doi.org/10.1103/PhysRevA.87.053625
---------- CHICAGO ----------
Jezek, D.M., Capuzzi, P., Cataldo, H.M. "Two-mode effective interaction in a double-well condensate" . Physical Review A - Atomic, Molecular, and Optical Physics 87, no. 5 (2013).
http://dx.doi.org/10.1103/PhysRevA.87.053625
---------- MLA ----------
Jezek, D.M., Capuzzi, P., Cataldo, H.M. "Two-mode effective interaction in a double-well condensate" . Physical Review A - Atomic, Molecular, and Optical Physics, vol. 87, no. 5, 2013.
http://dx.doi.org/10.1103/PhysRevA.87.053625
---------- VANCOUVER ----------
Jezek, D.M., Capuzzi, P., Cataldo, H.M. Two-mode effective interaction in a double-well condensate. Phys Rev A. 2013;87(5).
http://dx.doi.org/10.1103/PhysRevA.87.053625