Showing quant-phShow all
2 papers · 1 filter
quant-ph2025
Exactly solvable models for universal operator growth
Oleksandr Gamayun, Murtaza Ali Mir, Oleg Lychkovskiy +1
Quantum observables of generic many-body systems exhibit a universal pattern of growth in the Krylov space of operators. This pattern becomes particularly manifest in the Lanczos b…
quant-ph2024
Quantum speed limits for an open system in contact with a thermal bath
N. Il'in, A. Aristova, O. Lychkovskiy
We prove fundamental rigorous bounds on the speed of quantum evolution for a quantum system coupled to a thermal bath. The bounds are formulated in terms of expectation values of f…