Oscillatory interaction in a Bose-Einstein condensate: collective and topological excitations / Interações oscilatórias em um condensado de Bose-Einstein: excitações coletivas e topológicas

AUTOR(ES)
FONTE

IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia

DATA DE PUBLICAÇÃO

23/03/2012

RESUMO

In this work, we theoretically analyze the behavior of a Bose-Einstein condensate when it is submitted to oscillatory interactions. For that, a homogeneous magnetic field is applied, tuned near a Feshbach resonance, and then it is set to oscillate in time. This variation of the magnetic field causes a scattering length oscillation, which oscillates to interatomic interaction. Thus, we study collective and topological excitations due this oscillation in the interaction. In addition, we have seen a coupling between collective modes as well a dynamical phase transition associated to topological excitation

ASSUNTO(S)

condensação de bose-einstein excitações coletivos modos topológicos

ACESSO AO ARTIGO

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