The quantum-classical Liouville equation offers a rigorous approach to nonadiabatic quantum dynamics based on surface hopping type trajectories. However, in practice the applicability of this approach has been limited to short times owing to unfavorable numerical scaling. In this paper we show that this problem can be alleviated by combining it with a formally exact generalized quantum master equation treatment. This allows dramatic improvements in the efficiency of the approach in nonadiabatic regimes, making it computationally tractable to treat the quantum dynamics of complex systems for long times. We demonstrate our approach by applying it to a model of condensed phase charge transfer where our method is shown to be numerically exact in regimes where fewest-switches surface hopping and mean field approaches fail to obtain either the correct rates or long-time populations.
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7 July 2013
Research Article|
July 02 2013
Efficient and accurate surface hopping for long time nonadiabatic quantum dynamics
Aaron Kelly;
Aaron Kelly
Department of Chemistry,
Stanford University
, Stanford, California 94305, USA
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Thomas E. Markland
Thomas E. Markland
a)
Department of Chemistry,
Stanford University
, Stanford, California 94305, USA
Search for other works by this author on:
Aaron Kelly
Thomas E. Markland
a)
Department of Chemistry,
Stanford University
, Stanford, California 94305, USA
a)
Electronic mail: [email protected]
J. Chem. Phys. 139, 014104 (2013)
Article history
Received:
April 03 2013
Accepted:
June 11 2013
Citation
Aaron Kelly, Thomas E. Markland; Efficient and accurate surface hopping for long time nonadiabatic quantum dynamics. J. Chem. Phys. 7 July 2013; 139 (1): 014104. https://doi.org/10.1063/1.4812355
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