Ergodical time evolution of a Gaussian wave packet in quantum dots

Описание

Тип публикации: статья из журнала

Год издания: 1997

Идентификатор DOI: 10.1016/S0375-9601(96)00955-3

Аннотация: The time evolution of a Gaussian wave packet (GWP) confined in a quantum dot is numerically studied. The quantum dots are modelled by a two-dimensional square box and by the potential x(4) + y(4). For the case of an incommensurate energy spectrum the time evolution of observables has no global period. As a result this leads to ergoПоказать полностьюdic phase portraits with a finite phase volume. For the spatially wide GWP the distribution function of quantum observables may be approximated as a Gaussian one. For the case of commensurate transition frequencies in the quantum well the time evolution of observables is periodical and the phase portraits have a zero phase volume.

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Издание

Журнал: PHYSICS LETTERS A

Выпуск журнала: Vol. 226, Is. 6

Номера страниц: 387-392

ISSN журнала: 03759601

Место издания: AMSTERDAM

Издатель: ELSEVIER SCIENCE BV

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