Path Integral over Equivalence Classes for Quantum Dynamics with Static Disorder

An efficient, fully quantum mechanical, real-time path integral method for including the effects of static disorder in the dynamics of systems coupled to common or local harmonic baths is presented. Rather than performing a large number of demanding calculations for different realizations of the sys...

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Bibliographic Details
Published in:The journal of physical chemistry letters 2024-02, Vol.15 (5), p.1462-1468
Main Author: Makri, Nancy
Format: Article
Language:English
Subjects:
Physical Insights into Quantum Phenomena and Function
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Summary:An efficient, fully quantum mechanical, real-time path integral method for including the effects of static disorder in the dynamics of systems coupled to common or local harmonic baths is presented. Rather than performing a large number of demanding calculations for different realizations of the system Hamiltonian, the influence of the bath is captured through a single evaluation of the path sum by grouping the system paths into equivalence classes of fixed system amplitudes. The method is illustrated with several analytical and numerical examples that show a variety of nontrivial effects arising from the interplay among coherence, dissipation, thermal fluctuations, and geometric phases.
ISSN:1948-7185
1948-7185
DOI:10.1021/acs.jpclett.3c03555