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math-ph2024
Mapping partition functions
Di Yang, Don Zagier
We introduce an infinite group action on partition functions of WK type, meaning of the type of the partition function in the famous result of Witten and Kontsevich ex…
math-ph2024
A hyperbolic Kac-Moody Calogero model
Olaf Lechtenfeld, Don Zagier
A new kind of quantum Calogero model is proposed, based on a hyperbolic Kac-Moody algebra. We formulate nonrelativistic quantum mechanics on the Minkowskian root space of the simpl…