Out-of-Time-Ordered-Correlator Quasiprobabilities Robustly Witness Scrambling
Author(s): José Raúl González Alonso, Nicole Yunger Halpern, and Justin Dressel
Out-of-time-ordered correlators (OTOCs) have received considerable recent attention as qualitative witnesses of information scrambling in many-body quantum systems. Theoretical discussions of OTOCs typically focus on closed systems, raising the question of their suitability as scrambling witnesses i...
[Phys. Rev. Lett. 122, 040404] Published Fri Feb 01, 2019