Quantum Generalized Subsystems

Abstract

We propose a new formalism of quantum subsystems which allows to unify the existing and new methods of reduced description of quantum systems. The main mathematical ingredients are completely positive maps and correlation functions. In this formalism generalized quantum systems can be composed and there is a notion of generalized entanglement. Models of fermionic and bosonic systems and also quantum systems described by the SU(2) symmetry are studied.

21 pages

References in corpus (1)

• Generalized entanglement as a framework for complex quantum systems: Purity vs delocalization measures

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