Physics – Quantum Physics
Scientific paper
1999-10-27
Phys. Rev. E, 61 (2000) 6087
Physics
Quantum Physics
Six pages, LaTeX. The title has been shortened (and then further modified), at the suggestion of a colleague. Other minor chan
Scientific paper
10.1103/PhysRevE.61.6087
For certain infinite and finite-dimensional thermal systems, we obtain --- incorporating quantum-theoretic considerations into Bayesian thermostatistical investigations of Lavenda --- high-temperature expansions of priors over inverse temperature beta induced by volume elements ("quantum Jeffreys' priors) of Bures metrics. Similarly to Lavenda's results based on volume elements (Jeffreys' priors) of (classical) Fisher information metrics, we find that in the limit beta -> 0, the quantum-theoretic priors either conform to Jeffreys' rule for variables over [0,infinity], by being proportional to 1/beta, or to the Bayes-Laplace principle of insufficient reason, by being constant. Whether a system adheres to one rule or to the other appears to depend upon its number of degrees of freedom.
Slater Paul B.
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