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Nonadiabatic molecular dynamics simulation: An approach based on quantum measurement picture

arXiv
Authors: Wei Feng, Luting Xu, Xin-Qi Li, Weihai Fang, YiJing Yan

Year

2013

Paper ID

31376

Status

Preprint

Abstract Read

~2 min

Abstract Words

93

Citations

N/A

Abstract

Mixed-quantum-classical molecular dynamics simulation implies an effective measurement on the electronic states owing to continuously tracking the atomic forces.Based on this insight, we propose a quantum trajectory mean-field approach for nonadiabatic molecular dynamics simulations. The new protocol provides a natural interface between the separate quantum and classical treatments, without invoking artificial surface hopping algorithm. Moreover, it also bridges two widely adopted nonadiabatic dynamics methods, the Ehrenfest mean-field theory and the trajectory surface-hopping method. Excellent agreement with the exact results is illustrated with representative model systems, including the challenging ones for traditional methods.

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  • Mixed-quantum-classical molecular dynamics simulation implies an effective measurement on the electronic states owing to continuously tracking the atomic forces.Based on this...

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