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Dynamics of a one-dimensional Holstein polaron with Davydov Ansatze

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Dynamics of a one-dimensional Holstein polaron with Davydov Ansatze

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Title: Dynamics of a one-dimensional Holstein polaron with Davydov Ansatze
Author: Zhao, Yang; Sun, Jin; Luo, Bin
Copyright year: 2010
Abstract: Following the Dirac-Frenkel time-dependent variational principle, dynamics of a one-dimensional Holstein polaron is probed by employing the Davydov D2 Ansatz with two sets of variational parameters, one for each constituting particle in the exciton-phonon system, and a simplified variant of the Davydov D1 Ansatz, also known as the D Ansatz, with an additional set of phonon displacement parameters. A close examination of variational outputs from the two trial states reveals fine details of the polaron structure and intricacies of dynamic exciton-phonon interactions. Superradiance coherence sizes, speeds of exciton-induced phonon wave packets, linear optical absorption, and polaron energy compositions are also included in the study.
Subject: DRNTU::Science::Physics::Atomic physics::Properties of matter and antimatter.
Type: Journal Article
Series/ Journal Title: Physical review B : condensed matter and materials physics
School: School of Materials Science and Engineering
Version: Accepted version

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