Skip to main content
eScholarship
Open Access Publications from the University of California

A continued fraction resummation form of bath relaxation effect in the spin-boson model

  • Author(s): Gong, Z
  • Tang, Z
  • Mukamel, S
  • Cao, J
  • Wu, J
  • et al.

Published Web Location

https://doi.org/10.1063/1.4913198
Abstract

© 2015 AIP Publishing LLC. In the spin-boson model, a continued fraction form is proposed to systematically resum high-order quantum kinetic expansion (QKE) rate kernels, accounting for the bath relaxation effect beyond the second-order perturbation. In particular, the analytical expression of the sixth-order QKE rate kernel is derived for resummation. With higher-order correction terms systematically extracted from higher-order rate kernels, the resummed quantum kinetic expansion approach in the continued fraction form extends the Pade approximation and can fully recover the exact quantum dynamics as the expansion order increases.

Many UC-authored scholarly publications are freely available on this site because of the UC Academic Senate's Open Access Policy. Let us know how this access is important for you.

Main Content
Current View