Volume 5, Number 5, 809-870, DOI: 10.1007/s00023-004-0183-7

Scaling Algebras for Charged Fields and Short-Distance Analysis for Localizable and Topological Charges

Claudio D’Antoni, Gerardo Morsella and Rainer Verch

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Abstract

The method of scaling algebras, which has been introduced earlier as a means for analyzing the short-distance behavior of quantum field theories in the setting of the model-independent, operator algebraic approach, is extended to the case of fields carrying superselection charges. In doing so, consideration will be given to strictly localizable charges (ldquoDHR-typerdquo superselection charges) as well as to charges which can only be localized in regions extending to spacelike infinity (ldquoBF-typerdquo superselection charges). A criterion for the preservance of superselection charges in the short-distance scaling limit is proposed. Consequences of this preservance of superselection charges are studied. The conjugate charge of a preserved charge is also preserved, and for charges of DHR-type, the preservance of all charges of a quantum field theory in the scaling limit leads to equivalence of local and global intertwiners between superselection sectors.
Communicated by Klaus Fredenhagen
submitted 21/01/03, accepted 26/02/04

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