From the 1 of 5 linked papers with an AI index.
5 papers
Large deviations in quantum dynamics and complexity
Xiangyu Cao, Jorge Kurchan
We study three definitions of large deviation in many-body quantum dynamics: (i) via the full distribution of an extensive observable, (ii) via the distribution of measurement outc…
Planckian bound on quantum dynamical entropy
Xiangyu Cao
The paper defines a simplified quantum dynamical entropy that measures information gained by continuously monitoring an observable, computes its growth rate for generic many‑body s…
Consistent monitoring of quantum fluctuations
Xiangyu Cao
Recent works on the decoherent histories formalism suggested that slow-evolving macroscopic quantities (extensive sums of local observables) in quantum many-body systems can be con…
Redundancy from Subsystem Thermalization
Xiangyu Cao, Zohar Nussinov
In the theory of decoherence, redundancy is the correlation between a quantum system and fractions of the environment. It underlies the emergence of classical behavior. We show tha…
Stochastic Sampling of Operator Growth Dynamics
Ayush De, Umberto Borla, Xiangyu Cao +1
We put forward a Monte Carlo algorithm that samples the Euclidean time operator growth dynamics at infinite temperature. Crucially, our approach is free from the numerical sign pro…