Improved sampling and validation of frozen Gaussian approximation with surface hopping algorithm for nonadiabatic dynamics

Abstract

In the spirit of the fewest switches surface hopping, the frozen Gaussian approximation with surface hopping (FGA-SH) method samples a path integral representation of the non-adiabatic dynamics in the semiclassical regime. An improved sampling scheme is developed in this work for FGA-SH based on birth and death branching processes. The algorithm is validated for the standard test examples of non-adiabatic dynamics.

14 pages, 9 figures

References in corpus (2)

• Surface hopping from the perspective of quantum-classical Liouville dynamics
• The time-dependent Born-Oppenheimer approximation

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