Nonlinearity effects on the directed momentum current.
Phys Rev E Stat Nonlin Soft Matter Phys
; 90(2): 022907, 2014 Aug.
Article
em En
| MEDLINE
| ID: mdl-25215799
ABSTRACT
We investigate the quantum transport dynamics governed by the nonlinear Schrödinger equation with a periodically-δ-kicking potential and discover the emergence of a directed current in momentum space. With the increase of nonlinearity, we find strikingly that the momentum current decreases, reverses, and finally vanishes, indicating that the quantum transport can be effectively manipulated through adjusting the nonlinearity. The underlying dynamic mechanism is uncovered and some important implications are addressed.
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Base de dados:
MEDLINE
Assunto principal:
Dinâmica não Linear
/
Modelos Teóricos
Idioma:
En
Ano de publicação:
2014
Tipo de documento:
Article