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A Size-Consistent Multi-State Mapping Approach to Surface Hopping

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Mannouch,  J.
Hamburg Center for Ultrafast Imaging, Universität Hamburg ;
Theory Group, Theory Department, Max Planck Institute for the Structure and Dynamics of Matter, Max Planck Society;

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2403.10627.pdf
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Citation

Lawrence, J. E., Mannouch, J., & Richardson, J. O. (2024). A Size-Consistent Multi-State Mapping Approach to Surface Hopping.


Cite as: https://hdl.handle.net/21.11116/0000-000F-2604-2
Abstract
We develop a multi-state generalisation of the recently proposed mapping approach to surface hopping (MASH) for the simulation of electronically nonadiabatic dynamics. This new approach extends the original MASH method to be able to treat systems with more than two electronic states. It differs from previous approaches in that it is size consistent and rigorously recovers the original two-state MASH in appropriate limits. We demonstrate the accuracy of the method by application to a series of model systems for which exact benchmark results are available, and find that the method is well suited to the simulation of photochemical relaxation processes.