PHY 425

Information Physics

University at Albany · UGRD · Fall 2026

1 section

Catalog description

The basic principles of information theory and their relation to the laws of physics. Probability and entropy as tools for inductive reasoning. The Cox axioms. Bayes' theorem and its application to elementary data analysis. Relative entropy, the method of maximum entropy and the foundations of statistical mechanics and thermodynamics. Information geometry, the Fisher-Rao information metric. Derivation of quantum mechanics from information theory. Prerequisite(s): A PHY 450 and A PHY 460, or permission of the instructor.

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Class #albany_2-PHY425Fall 2026UGRD3 credits

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