Nonlocal-Unification-Informed Bayes Rule With Implications for Background Independence
Aman Chawla
Abstract
Schack, Brun, and Caves derived a quantum Bayes rule for exchangeable quantum states by showing that, under generalized measurements, the posterior state of unmeasured systems may be represented as a Bayesian update over density operators. The present article proposes a Nonlocal-Unification-informed extension of that rule. In Nonlocal Unification (NU), an observer is not only an abstract user of probabilities, but an embodied sampling function acting on a nonlocal informational substrate. The proposed update therefore acts on a joint model of quantum state and observer function. The ordinary quantum Bayes rule is recovered when the sampling architecture is fixed. The article further examines NU information conservation, Frechet convergence of observer functions to a limiting observer, and a two-observer toy universe in which one observer reconstructs the internal spacetime of another. The resulting framework connects Bayesian inference, observer-relative spacetime reconstruction, and the informational field-equation side of NU.