421 citations · 521 across the 13 of their papers we have counts for
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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…
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…
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.…
Observers of quantum systems cannot agree to disagree
Patricia Contreras-Tejada, Giannicola Scarpa, Aleksander M. Kubicki +2
Is the world quantum? An active research line in quantum foundations is devoted to exploring what constraints can rule out the postquantum theories that are consistent with experim…
Rényi Entropy, Signed Probabilities, and the Qubit
Adam Brandenburger, Pierfrancesco La Mura, Stuart Zoble
The states of the qubit, the basic unit of quantum information, are positive semi-definite Hermitian matrices with trace 1. We contribute to the program to axiomatize…
No-Signalling Is Equivalent To Free Choice of Measurements
Samson Abramsky, Adam Brandenburger, Andrei Savochkin
No-Signalling is a fundamental constraint on the probabilistic predictions made by physical theories. It is usually justified in terms of the constraints imposed by special relativ…