Conjugate pairs of Hadamard subfactors and vertex models

Fuente: arXiv
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Autores principales: Bakshi, Keshab Chandra, Guin, Satyajit, Guruprasad
Formato: Preprint
Publicado: 2024
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author Bakshi, Keshab Chandra
Guin, Satyajit
Guruprasad
author_facet Bakshi, Keshab Chandra
Guin, Satyajit
Guruprasad
contents We show that any two Hadamard subfactors arising from a pair of distinct complex Hadamard matrices of order 3 are either equal or conjugate by a unitary in the relative commutant of their intersection. Moreover, when the Hadamard subfactors are not equal, we prove the factoriality of their intersection, and it turns out to be a vertex model subfactor. We compute the first relative commutant and characterize this subfactor by identifying it with a particular type of Krishnan-Sunder subfactor. A few key invariants, including the Pimsner-Popa probabilistic number, the angle, and the Connes-Størmer relative entropy for the pair of Hadamard subfactors are computed to understand their relative position.
format Preprint
id arxiv_https___arxiv_org_abs_2401_01664
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Conjugate pairs of Hadamard subfactors and vertex models
Bakshi, Keshab Chandra
Guin, Satyajit
Guruprasad
Operator Algebras
Functional Analysis
46L37, 46L55, 46L10, 37A35
We show that any two Hadamard subfactors arising from a pair of distinct complex Hadamard matrices of order 3 are either equal or conjugate by a unitary in the relative commutant of their intersection. Moreover, when the Hadamard subfactors are not equal, we prove the factoriality of their intersection, and it turns out to be a vertex model subfactor. We compute the first relative commutant and characterize this subfactor by identifying it with a particular type of Krishnan-Sunder subfactor. A few key invariants, including the Pimsner-Popa probabilistic number, the angle, and the Connes-Størmer relative entropy for the pair of Hadamard subfactors are computed to understand their relative position.
title Conjugate pairs of Hadamard subfactors and vertex models
topic Operator Algebras
Functional Analysis
46L37, 46L55, 46L10, 37A35
url https://arxiv.org/abs/2401.01664