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Fluctuation theorems, quantum channels and gravitational algebras

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arxiv 2408.04219 v2 pith:6SAAKZED submitted 2024-08-08 hep-th gr-qc

Michele Cirafici This is my paper · ORCID
classification hep-thgr-qc
keywords quantumchannelsmeasurementtheoryalgebrasfluctuationfluctuationsgravitational
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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 to access the dynamical fluctuations of observables via a two-point measurement scheme. Using this formalism, we establish specific fluctuation theorems. Additionally, we demonstrate that quantum channels are represented by subfactors, using the relationship between measurement theory and quantum channels. We also comment on implementing a quantum channel using Jones' theory of subfactors.

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Cited by 1 Pith paper

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  1. Observers, local measurements, and topology

    hep-th 2026-07 conditional novelty 6.0 of 10

    Measurement correlations along an observer's worldline define a simplicial complex whose homology is proposed to be the topology of the accessible quantum-gravitational spacetime.

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