Variational study of polaron dynamics with the Davydov Ansätze

Variational study of polaron dynamics with the Davydov Ansätze

We derive explicit expressions for the amplitudes of the deviation vectors for the time-dependent Davydov D1, D2 and D ̃ Ansätze from the exact solution of the Schro ̈dinger equation for the Holstein polaron. By comparing the deviation amplitudes with the system energ...

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Bibliographic Details
Main Authors: Luo, Bin, Ye, Jun, Zhao, Yang
Other Authors: School of Materials Science & Engineering
Format: Article
Language:English
Published: 2011
Subjects:
DRNTU::Science::Physics::Atomic physics::Solid state physics
Online Access:https://hdl.handle.net/10356/91937
http://hdl.handle.net/10220/6917
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Institution: Nanyang Technological University
Language: English
Description
Summary:We derive explicit expressions for the amplitudes of the deviation vectors for the time-dependent Davydov D1, D2 and D ̃ Ansätze from the exact solution of the Schro ̈dinger equation for the Holstein polaron. By comparing the deviation amplitudes with the system energies, a systematic study is carried out on the validity of the Davydov Ansätze.

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