DYNAMICS OF EXCITATIONS IN MOLECULAR CONDENSATES UNDER THE INFLUENCE OF AN ULTRASHORT-PULSE

Authors
Citation
J. Perina, DYNAMICS OF EXCITATIONS IN MOLECULAR CONDENSATES UNDER THE INFLUENCE OF AN ULTRASHORT-PULSE, Journal of physics. A, mathematical and general, 30(23), 1997, pp. 8105-8117
Citations number
29
Categorie Soggetti
Physics,"Physycs, Mathematical
ISSN journal
03054470
Volume
30
Issue
23
Year of publication
1997
Pages
8105 - 8117
Database
ISI
SICI code
0305-4470(1997)30:23<8105:DOEIMC>2.0.ZU;2-G
Abstract
A new method for the description of simultaneous creation, annihilatio n, propagation and relaxation of excitations in exciton (electron) sys tems interacting with a phonon bath and an ultrashort quantum optical pulse is developed on the basis of generalized master equations derive d by using a time-dependent projector. It is shown, that standard theo ries starting from an already created excitation at a given place, wit hout any off-diagonal elements of the exciton density matrix, have a v ery limited area of application because off-diagonal elements are gene rally nonzero once the excited pulse switches off Derived equations al so describe the influence of quantum statistics of the pulse.