An exactly solvable model for coherent and incoherent exciton motion |
| |
Authors: | H Haken Dr G Strobl |
| |
Institution: | 1. Institut für theoretische Physik der Universit?t Stuttgart, Federal Republic of Germany 2. Georg Büchner Str. 23, D-6500, Mainz-Hechtsheim, Federal Republic of Germany
|
| |
Abstract: | We treat the motion of a Frenkel exciton using a Hamiltonian which comprises a completely coherent part and a fluctuating part which describes both fluctuations of the energy of a localized exciton and fluctuations of the transition matrix elements between different lattice sites. Under the assumption that the fluctuating forces are Markoffian and Gaussian we derive exactly a density matrix equation which can be solved by a Green's function method. |
| |
Keywords: | |
本文献已被 SpringerLink 等数据库收录! |
|