Quantum information scrambling in molecules
نویسندگان
چکیده
Out-of-time-order correlators (OTOCs) can be used to probe how quickly a quantum system scrambles information when the initial conditions of dynamics are changed. In sufficiently large systems, one extract from OTOC analog Lyapunov coefficient that describes timescale on which classical chaotic becomes scrambled. OTOCs have been applied only very limited number toy models, such as Sachdev-Ye-Kitaev model connected with black hole scrambling, but they could find much wider applicability for scrambling in systems allow comparison experiments. The vibrations polyatomic molecules known undergo transition regular at low energy facile flow high energy. Molecules therefore represent ideal study many-body moderate size (here 6 36 degrees freedoms). By computing and their counterparts we quantify ``scrambled'' mechanically molecular systems. Between early ``ballistic'' dynamics, late ``saturation'' full density states is explored, there indeed regime where defined all this study. Comparison experimental rate data shows slow measured by reach reaction dynamics. Even smallest discuss, Maldacena bound remains satisfied regularized OTOCs, not unregularized highlighting former more useful discussing type moderate-size system.
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ژورنال
عنوان ژورنال: Physical review
سال: 2022
ISSN: ['0556-2813', '1538-4497', '1089-490X']
DOI: https://doi.org/10.1103/physreva.105.033322