Jones-Temperley-Lieb Algebras from the viewpoint of noncommutative probability

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• Claus Koestler (University College Cork)
• Monday 02 December 2024, 14:10-14:30
• Seminar Room 1, Newton Institute.

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QIAW02 - New trends at the intersection of quantum information theory, quantum groups and operator algebras

Thoma’s theorem provides a characterization of the extremal characters of the infinite symmetric group. Using distributional invariance principles in noncommutative probability, this famous theorem was shown by Gohm and Köstler to form part of a quantum de Finetti theorem. A key element of the underlying operator algebraic approach was the consideration of the infinite symmetric group presented via star generators. Furthermore, Nica and Köstler identified that the central limit laws of this sequence of star generators, with respect to certain extremal characters, correspond to the empirical law of traceless GUE random d x d matrices. My talk will briefly review these results and address ongoing research into transferring them to extremal tracial states on the Jones-Temperley-Lieb algebras. A successful transfer would highlight the robustness of the Jones index as a consequence of a noncommutative de Finetti theorem.

This talk is part of the Isaac Newton Institute Seminar Series series.

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