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arXiv 2104.00738physics.chem-phphysics.comp-ph
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具有精确因式分解的超快动力学

Ultrafast dynamics with the exact factorization

Federica Agostini, E. K. U. Gross

摘要:

含时电子-核波函数的精确因式分解已成功地应用于量子分子动力学模拟领域,用来解释和模拟光致超快过程。在这项工作中,我们总结了主要的发展,导致制定一个基于几何的方法,来自精确的因式分解方程,能够处理非绝热电子过程,包括自旋轨道耦合和非微扰效应的外部时间依赖性字段。这种基于量子力学的量子经典方法被称为耦合轨道混合量子经典(CT-MQC)算法,其性能在这里进行测试,以研究IBr的光解动力学。

英文摘要:

The exact factorization of the time-dependent electron-nuclear wavefunction has been employed successfully in the field of quantum molecular dynamics simulations for interpreting and simulating light-induced ultrafast processes. In this work, we summarize the major developments leading to the formulation of a trajectory-based approach, derived from the exact factorization equations, capable of dealing with nonadiabatic electronic processes, and including spin-orbit coupling and the non-perturbative effect of an external time-dependent field. This trajectory-based quantum-classical approach has been dubbed coupled-trajectory mixed quantum-classical (CT-MQC) algorithm, whose performance is tested here to study the photo-dissociation dynamics of IBr.

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