4 papers · 1 filter
Emergent random matrix universality in quantum operator dynamics
Oliver Lunt, Thomas Kriecherbauer, Kenneth T-R McLaughlin +1
The high complexity of many-body quantum dynamics means that essentially all approaches either exploit special structure or are approximate in nature. One such approach--the memory…
Breakdown of Fermi's Golden Rule in 1d systems at non-zero temperature
Thomas Young, Jerome LLoyd, Curt von Keyserlingk
In interacting quantum systems, the single-particle Green's function is expected to decay in time due to the interaction induced decoherence of quasiparticles. In the limit of weak…
Approximation theory for Green's functions via the Lanczos algorithm
Gabriele Pinna, Oliver Lunt, Curt von Keyserlingk
It is known that Green's functions can be expressed as continued fractions; the content at the -th level of the fraction is encoded in a coefficient , which can be recursiv…
Thermalization rates and quantum Ruelle-Pollicott resonances: insights from operator hydrodynamics
Carolyn Zhang, Laimei Nie, Curt von Keyserlingk
In thermalizing many-body quantum systems without conservation laws such as ergodic Floquet and random unitary circuits, local expectation values are predicted to decay to their eq…