Abstract
We show that the known bound on the growth rate of the out-of-time-order four-point correlator in chaotic many-body quantum systems follows directly from the general structure of operator matrix elements in systems that obey the eigenstate thermalization hypothesis. This ties together two key paradigms of thermal behavior in isolated many-body quantum systems.
- Received 27 June 2019
DOI:https://doi.org/10.1103/PhysRevLett.123.230606
© 2019 American Physical Society
Physics Subject Headings (PhySH)
Statistical Physics & Thermodynamics