Out-of-time-ordered correlators and the Loschmidt echo in the quantum kicked top: How low can we go?

Sreeram PG, Vaibhav Madhok, Arul Lakshminarayan

The out-of-time-ordered correlators (OTOC) and the Loschmidt echo are two measures that are now widely being explored to characterize sensitivity to perturbations and information s…