3 papers
quant-ph2025
Delayed Arrow-of-Time Detection in Signed Laplacian Dynamics
Adam Brandenburger, Pierfrancesco La Mura
We study how rapidly the direction of time becomes operationally detectable from mesoscopic data when state-weights may be positive or negative. In contrast with classical Markov p…
quant-ph2025
Classical Simulation of Non-Classical Systems: A Large Deviation Analysis
Adam Brandenburger, Pierfrancesco La Mura
Any quasi-probability representation of a no-signaling system -- including quantum systems -- can be simulated via a purely classical scheme by allowing signed events and a cancell…
quant-ph2024
Axiomatization of Rényi Entropy on Quantum Phase Space
Adam Brandenburger, Pierfrancesco La Mura
Phase-space versions of quantum mechanics -- from Wigner's original distribution to modern discrete-qudit constructions -- represent some states with negative quasi-probabilities.…