From the 1 of 8 linked papers with an AI index.
8 papers
Quantum incompatibility of Born probabilities
Esteban Castro-Ruiz, Nathan Cohen, Luis C. Barbado +1
The paper shows that when measurements are performed relative to non‑ideal quantum reference frames, the Born probabilities become indefinite, leading to irreducible uncertainty in…
Indefinite Quantum Causality
Fabio Costa, Giulia Rubino, Cyril Branciard +2
In recent years, operational approaches to quantum foundations have been developed as a means of understanding the core principles and distinctive features of quantum theory. Such…
Coarse-grained quantum thermodynamics: Observation-dependent quantities, observation-independent laws
Giulia Rubino, Äaslav Brukner, Gonzalo Manzano
In both classical and quantum thermodynamics, physical quantities are typically assigned objective values defined independently of our observations. We then refer to the 'work perf…
The classical limit of quantum mechanics through coarse-grained measurements
Fatemeh Bibak, Carlo Cepollaro, Nicolás Medina Sánchez +2
Understanding how classical physics emerges from quantum mechanics remains a central problem in the foundations of physics. Here we derive a classical limit from finite-resolution…
Frame perspectives for process matrices: from coordinate parametrization to spacetime representation
Luca Apadula, Alexei Grinbaum, Äaslav Brukner
We study how to implement and transform frame perspectives for quantum processes in the process-matrix formalism. We argue that, for pure processes, the causal reference frames (CR…
Accessibility of Global Properties from Internal Quantum Reference Frame Perspectives
Anne-Catherine de la Hamette, Viktoria Kabel, Äaslav Brukner
A fundamental question in the field of quantum reference frames concerns what global properties of a system can be determined by observers operating entirely from within that syste…