On the memory kernel and the reduced system propagator.
J Chem Phys
; 149(10): 104105, 2018 Sep 14.
Article
em En
| MEDLINE
| ID: mdl-30219023
ABSTRACT
We relate the memory kernel in the Nakajima-Zwanzig-Mori time-convolution approach to the reduced system propagator which is often used to obtain the kernel in the Tokuyama-Mori time-convolutionless approach. The connection provides a robust and simple formalism to compute the memory kernel for a generalized system-bath model circumventing the need to compute high order system-bath observables, thus streamlining the use of numerically exact solvers for calculating the memory kernel. We illustrate this for a model system with electron-electron and electron-phonon couplings, driven away from equilibrium.
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MEDLINE
Idioma:
En
Ano de publicação:
2018
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Article