3 papers
hep-th2026
Observers, local measurements, and topology
Michele Cirafici
An observer which propagates in a spacetime with dynamical gravity has access to an algebra of observables which is expected to be a von Neumann algebra with a trace. The observer…
hep-th2024
Gravitational algebras and applications to nonequilibrium physics
Michele Cirafici
This note aims to offer a non-technical and self-contained introduction to gravitational algebras and their applications in the nonequilibrium physics of gravitational systems. We…
hep-th2024
Fluctuation theorems, quantum channels and gravitational algebras
Michele Cirafici
In this note we study nonequilibrium fluctuations in gravitational algebras within de Sitter space. An essential aspect of this study is quantum measurement theory, which allows us…