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Título:
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Theory of 2 ?-kicked quantum rotors
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Autores:
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Creffield, Charles E. ;
Fishman, S. ;
Monteiro, T. S.
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Tipo de documento:
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texto impreso
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Editorial:
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American Physical Society, 2006-06
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Dimensiones:
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application/pdf
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Nota general:
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info:eu-repo/semantics/openAccess
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Idiomas:
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Palabras clave:
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Estado = Publicado
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Materia = Ciencias: Física: Física de materiales
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Materia = Ciencias: Física: Física del estado sólido
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Tipo = Artículo
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Resumen:
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We examine the quantum dynamics of cold atoms subjected to pairs of closely spaced kicks from standing waves of light and find behavior quite unlike the well-studied quantum kicked rotor QKR. We show that the quantum phase space has a periodic, cellular structure arising from a unitary matrix with oscillating bandwidth. The corresponding eigenstates are exponentially localized, but scale with a fractional power L~?_(-0.75), in contrast to the QKR for which L~?_(-1). The effect of intercell (and intracell) transport is investigated by studying the spectral fluctuations with both periodic as well as “open” boundary conditions.
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En línea:
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https://eprints.ucm.es/33557/1/Creffield%20C%2016%20LIBRE.pdf
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