Superselection sectors for posets of von Neumann algebras
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arXiv
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| Autores principales: | , , , , , , |
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| Formato: | Preprint |
| Publicado: |
2024
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| Acceso en línea: | |
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| _version_ | 1866914994475499520 |
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| author | Bhardwaj, Anupama Brisky, Tristen Chuah, Chian Yeong Kawagoe, Kyle Keslin, Joseph Penneys, David Wallick, Daniel |
| author_facet | Bhardwaj, Anupama Brisky, Tristen Chuah, Chian Yeong Kawagoe, Kyle Keslin, Joseph Penneys, David Wallick, Daniel |
| contents | We study a commutant-closed collection of von Neumann algebras acting on a common Hilbert space indexed by a poset with an order-reversing involution. We give simple geometric axioms for the poset which allow us to construct a braided tensor category of superselection sectors analogous to the construction of Gabbiani and Fröhlich for conformal nets. For cones in $\mathbb{R}^2$, we weaken our conditions to a bounded spread version of Haag duality and obtain similar results. We show that intertwined nets of algebras have isomorphic braided tensor categories of superselection sectors. Finally, we show that the categories constructed here are equivalent to those constructed by Naaijkens and Ogata for certain 2D quantum spin systems. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2410_21454 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | Superselection sectors for posets of von Neumann algebras Bhardwaj, Anupama Brisky, Tristen Chuah, Chian Yeong Kawagoe, Kyle Keslin, Joseph Penneys, David Wallick, Daniel Operator Algebras Mathematical Physics Category Theory Quantum Algebra Primary: 81T05, 18M15, Secondary: 81T25, 46L60 We study a commutant-closed collection of von Neumann algebras acting on a common Hilbert space indexed by a poset with an order-reversing involution. We give simple geometric axioms for the poset which allow us to construct a braided tensor category of superselection sectors analogous to the construction of Gabbiani and Fröhlich for conformal nets. For cones in $\mathbb{R}^2$, we weaken our conditions to a bounded spread version of Haag duality and obtain similar results. We show that intertwined nets of algebras have isomorphic braided tensor categories of superselection sectors. Finally, we show that the categories constructed here are equivalent to those constructed by Naaijkens and Ogata for certain 2D quantum spin systems. |
| title | Superselection sectors for posets of von Neumann algebras |
| topic | Operator Algebras Mathematical Physics Category Theory Quantum Algebra Primary: 81T05, 18M15, Secondary: 81T25, 46L60 |
| url | https://arxiv.org/abs/2410.21454 |