Invariants of the dynamics of molecular vibrational wave packets in phase modulationстатья
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Дата последнего поиска статьи во внешних источниках: 14 января 2015 г.
Авторы:
Bugaeva M.S.,
Vetchinkin A.S.
Журнал:
Russian Journal of Physical Chemistry B
Том:
3
Номер:
3
Год издания:
2009
Издательство:
Maik Nauka/Interperiodica Publishing
Местоположение издательства:
Russian Federation
Первая страница:
410
Последняя страница:
412
DOI:
10.1134/S1990793109030117
Аннотация:
An exact analytic solution was obtained for the correlation function of the motion of a phase-modulated Gauss wave packet in an anharmonic potential. The solution is expressed through the theta-function with the parameters depending on both the potential and phase modulation of the initial wave packet. Changes in both linear and quadratic chirps result in an invariant correlation function time shift in a weakly anharmonic potential with the conservation of all the total and fractional revivals. At a strong potential anharmonicity, translational invariance with respect to a quadratic chirp is preserved in certain instances, whereas the dynamics of packets experiences qualitative changes depending on linear phase modulation. This approach can be used to qualitatively analyze intramolecular dynamics if the potential energy surface is not known exactly, which is especially useful for quantum control of large molecules, in particular, photochromes. © 2009 Pleiades Publishing, Ltd.
Добавил в систему:
Ветчинкин Андрей Сергеевич