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Non-equilibrium reactive flux: A unified framework for slow and fast reaction kinetics

机译:非平衡活性通量:缓慢和快速反应动力学的统一框架

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摘要

The flux formulation of reaction rate theory is recast in terms of the expectation value of the reactive flux with an initial condition that corresponds to a non-equilibrium, factorized reactant density. In the common case of slow reactive processes, the non-equilibrium expression reaches the plateau regime only slightly slower than the equilibrium flux form. When the reactants are described by a single quantum state, as in the case of electron transfer reactions, the factorized reactant density describes the true initial condition of the reactive process. In such cases, the time integral of the non-equilibrium flux expression yields the reactant population as a function of time, allowing characterization of the dynamics in cases where there is no clear separation of time scales and thus a plateau regime cannot be identified. The non-equilibrium flux offers a unified approach to the kinetics of slow and fast chemical reactions and is ideally suited to mixed quantum-classical methods. Published by AIP Publishing.
机译:反应速率理论的助熔剂制剂是反应助焊剂的预期值的重量,其初始条件对应于非平衡,分解反应物密度。在慢性反应过程的常见情况下,非平衡表达仅达到高原制度,仅略微慢于平衡通量形式。当通过单量子状态描述反应物时,如在电子转移反应的情况下,分解反应物密度描述了反应过程的真实初始条件。在这种情况下,非平衡通量表达的时间整体产生反应物群作为时间的函数,允许在没有明确分离时间尺度的情况下的动态表征动态,因此不能识别平台制度。非平衡通量为缓慢和快速化学反应的动力学提供统一的方法,理想地适用于混合量子古典方法。通过AIP发布发布。

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