Bound on quantum scrambling with all-to-all interactions
Sign Up to like & getrecommendations! Published in 2020 at "Physical Review A"
DOI: 10.1103/physreva.102.022402
Abstract: We prove bounds on operator growth and infinite temperature out-of-time-ordered correlators in many-body systems with $N$ spin-$\frac{1}{2}$ degrees of freedom which interact via two-body all-to-all interactions. Our results parametrically improve previous bounds, and sharply constrain… read more here.
Keywords: scrambling interactions; bound quantum; quantum scrambling;
Distinct Bound of the Quantum Speed Limit via the Gauge Invariant Distance.
Sign Up to like & getrecommendations! Published in 2019 at "Physical review letters"
DOI: 10.1103/physrevlett.123.180403
Abstract: We derive a distinct bound of the quantum speed limit for a non-Hermitian quantum system by employing the gauge invariant and geometric natures of quantum mechanics. The bound is of geometric properties since it relates… read more here.
Keywords: quantum speed; distinct bound; bound quantum; gauge invariant ... See more keywords