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A variational master equation approach to quantum dynamics with off-diagonal coupling in a sub-Ohmic environment
A master equation approach based on an optimized polaron transformation is adopted for dynamics simulation with simultaneous diagonal and off-diagonal spin-boson coupling. Two types of bath spectral density functions are ...
Polaron dynamics with a multitude of Davydov D2 trial states
We propose an extension to the Davydov D2 Ansatz in the dynamics study of the Holstein molecular crystal model with diagonal and off-diagonal exciton-phonon coupling using the Dirac-Frenkel time-dependent variational ...