Quantum Scrambling in Molecules .
ORAL
Abstract
In quantum systems, out of time order correlators (OTOCs) can be used to probe the sensitivity of the dynamics to perturbing the Hamiltonian or changing the initial conditions ordinarily associated with classical chaos or its quantum analog. The vibrations of polyatomic molecules are known to undergo a transition from regular dynamics at low energy to facile energy flow at sufficiently high energy. Molecules therefore represent ideal quantum systems to study the transition to chaos in many-body systems of moderate size (here 6 to 36 degrees of freedom). By computing quantum OTOCs and their classical counterparts we quantify how information becomes ‘scrambled’ quantum mechanically in molecular systems.
*Chenghao Zhang and Martin Gruebele were supported by the James R. Eiszner Chair. Computations were supported by XSEDE grant MCB180022 on Bridges/Pylon to M. G. and C. Z, funded by National Science Foundation grant ACI-1548562. Peter Guy Wolynes was supported by the Center for Theoretical Biological Physics, sponsored by NSF grant PHY- 2019745. Additionally, we wish to recognize the D.R. Bullard Welch Chair at Rice University, Grant C-0016 (to Wolynes).
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Publication: Submitted to PRL:
Quantum Scrambling in Molecules Chenghao Zhang, Peter G. Wolynes, and Martin Gruebele,
Presenters
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Chenghao Zhang
- University of Illinois at Urbana-Champaign