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arXiv · 2410.10685

On Chalykh's approach to eigenfunctions of DIM-induced integrable Hamiltonians

A. Mironov·A. Morozov·A. Popolitov
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Abstract

Quite some years ago, Oleg Chalykh has built a nice theory from the observation that the Macdonald polynomial reduces at $t=q^{-m}$ to a sum over permutations of simpler polynomials called Baker-Akhiezer functions, which can be unambiguously constructed from a system of linear difference equations. Moreover, he also proposed a generalization of these polynomials to the twisted Baker-Akhiezer functions. Recently, in a private communication Oleg suggested that these twisted Baker-Akhiezer functions could provide eigenfunctions of the commuting Hamiltonians associated with the $(-1,a)$ rays of the Ding-Iohara-Miki algebra. In the paper, we discuss this suggestion and some evidence in its support.

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A. Mironov, A. Morozov, A. Popolitov. 2024-10-14. On Chalykh's approach to eigenfunctions of DIM-induced integrable Hamiltonians. https://doi.org/10.1016/j.physletb.2025.139380

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