Extensions of Bundles of C*-algebras

• URL: http://arxiv.org/abs/2102.11993v2
• Date: Mon, 24 May 2021 19:58:23 GMT
• Title: Extensions of Bundles of C*-algebras
• Authors: Jeremy Steeger and Benjamin H. Feintzeig
• Abstract summary: We prove existence and uniqueness results for such extensions. We show that such extensions are functorial for the C*-product, dynamical automorphisms, and the Lie bracket.
• Score: 0.0
• License: http://creativecommons.org/licenses/by/4.0/
• Abstract: Bundles of C*-algebras can be used to represent limits of physical theories whose algebraic structure depends on the value of a parameter. The primary example is the $\hbar\to 0$ limit of the C*-algebras of physical quantities in quantum theories, represented in the framework of strict deformation quantization. In this paper, we understand such limiting procedures in terms of the extension of a bundle of C*-algebras to some limiting value of a parameter. We prove existence and uniqueness results for such extensions. Moreover, we show that such extensions are functorial for the C*-product, dynamical automorphisms, and the Lie bracket (in the $\hbar\to 0$ case) on the fiber C*-algebras.

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