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arXiv · 2310.14493

Quantum cluster algebras and 3D integrability: Tetrahedron and 3D reflection equations

Rei Inoue·Atsuo Kuniba·Yuji Terashima
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Abstract

We construct a new solution to the tetrahedron equation and the three-dimensional (3D) reflection equation by extending the quantum cluster algebra approach by Sun and Yagi concerning the former. We consider the Fock-Goncharov quivers associated with the longest elements of the Weyl groups of type $A$ and $C$, and investigate the cluster transformations corresponding to changing a reduced expression into a `most distant' one. By devising a new realization of the quantum $y$-variables in terms of $q$-Weyl algebra, the solutions are extracted as the operators whose adjoint actions yield the cluster transformations of the quantum $y$-variables. Explicit formulas of their matrix elements are also derived for some typical representations.

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Rei Inoue, Atsuo Kuniba, Yuji Terashima. 2023-10-23. Quantum cluster algebras and 3D integrability: Tetrahedron and 3D reflection equations. https://arxiv.org/abs/2310.14493

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