Journal
CHEMICAL PHYSICS LETTERS
Volume 369, Issue 1-2, Pages 60-67Publisher
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DOI: 10.1016/S0009-2614(02)01990-5
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We present a new prescription (called the delV prescription) for treating classically forbidden surface hops in semiclassical trajectory surface hopping simulations. The new method uses gradient information about the target electronic surface to determine the nuclear dynamics at a frustrated hopping event. We have tested this prescription, along with previously suggested prescriptions, against accurate quantum dynamics for 21 cases. We find that the fewest switches with time uncertainty (FSTU) algorithm with the delV prescription for momentum changes at frustrated hops is the most accurate of the six variants of the surface hopping approach that we tested. (C) 2003 Elsevier Science B.V. All rights reserved.
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