Dynamics of the Davydov D-squared Ansatz with off-diagonal coupling

• المؤلفون الرئيسيون: Zhao, Yang, Luo, Bin, Ye, Jun
• مؤلفون آخرون: School of Materials Science & Engineering
• التنسيق: مقال
• اللغة: English
• منشور في: 2011
• الموضوعات: DRNTU::Science::Physics::Atomic physics::Solid state physics
• الوصول للمادة أونلاين: https://hdl.handle.net/10356/93836; http://hdl.handle.net/10220/6784

Following the Dirac-Frenkel time-dependent variational principle, dynamics of a one-dimensional Holstein polaron with off-diagonal exciton-phonon coupling is probed by employing the Davy dov D2 Ansatz with two sets of variational parameters,one for each constituting particle in the exciton-phonon system. A close examination of variational outputs from the two trial states reveals fine details of the polar on 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.