Independent quantum systems and the associativity of the product of quantum observables
Independent quantum systems and the associativity of the product of quantum observables
Author(s): Klaus FredenhagenSubject(s): Logic, Special Branches of Philosophy, Philosophy of Science
Published by: Copernicus Center Press
Keywords: quantum systems; quantum observables
Summary/Abstract: We start from the assumption that the real valued observables of a quantum system form a Jordan algebra which is equipped with a compatible Lie product characterizing infinitesimal symmetries, and ask whether two such systems can be considered as independent subsystems of a larger system. We show that this is possible if and only if the associator of the Jordan product is a fixed multiple of the associator of the Lie product. In this case it is known that the two products can be combined to an associative product in the Jordan algebra or its complexification, depending on the sign of the multiple.
Journal: Zagadnienia Filozoficzne w Nauce
- Issue Year: 2019
- Issue No: 66
- Page Range: 61-72
- Page Count: 12
- Language: English