Discrete subfactors include a particular class of infinite index subfactors and all finite index ones. A discrete subfactor is called local when it is braided and it fulfills a commutativity condition motivated by the study of inclusion of Quantum Field Theories in the algebraic Haag-Kastler setting. In Bischoff et al. (J Funct Anal 281(1):109004, 2021), we proved that every irreducible local discrete subfactor arises as the fixed point subfactor under the action of a canonical compact hypergroup. In this work, we prove a Galois correspondence between intermediate von Neumann algebras and closed subhypergroups, and we study the subfactor theoretical Fourier transform in this context. Along the way, we extend the main results concerning alpha-induction and sigma-restriction for braided subfactors previously known in the finite index case.

Bischoff, M., Del Vecchio, S., Giorgetti, L. (2022). Galois correspondence and Fourier analysis on local discrete subfactors. ANNALES HENRI POINCARE', 23, 2979-3020 [10.1007/s00023-022-01154-4].

Galois correspondence and Fourier analysis on local discrete subfactors

Bischoff, M;Del Vecchio, S;Giorgetti, L
2022

Abstract

Discrete subfactors include a particular class of infinite index subfactors and all finite index ones. A discrete subfactor is called local when it is braided and it fulfills a commutativity condition motivated by the study of inclusion of Quantum Field Theories in the algebraic Haag-Kastler setting. In Bischoff et al. (J Funct Anal 281(1):109004, 2021), we proved that every irreducible local discrete subfactor arises as the fixed point subfactor under the action of a canonical compact hypergroup. In this work, we prove a Galois correspondence between intermediate von Neumann algebras and closed subhypergroups, and we study the subfactor theoretical Fourier transform in this context. Along the way, we extend the main results concerning alpha-induction and sigma-restriction for braided subfactors previously known in the finite index case.
Pubblicato
Rilevanza internazionale
Articolo
Esperti anonimi
Settore MAT/05
English
Bischoff, M., Del Vecchio, S., Giorgetti, L. (2022). Galois correspondence and Fourier analysis on local discrete subfactors. ANNALES HENRI POINCARE', 23, 2979-3020 [10.1007/s00023-022-01154-4].
Bischoff, M; Del Vecchio, S; Giorgetti, L
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/2108/303682
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