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arXiv · 2608.20714

Multiparameter Quantum Affine Spaces and the Scalene Yang--Baxter Equation

Pramod Padmanabhan·Somnath Maity·Vladimir Korepin
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Abstract

We construct representation-independent families of solutions of the non-braided scalene Yang--Baxter equation from quadratic noncommutative algebras. Beginning with two anticommuting generators, we obtain a continuous deformation in terms of quantum-plane algebras and extend the construction to an arbitrary number of generators. In the latter case the scalene Yang--Baxter relation fixes the multiparameter exchange matrix to an exact multiplicative form, thereby selecting a distinguished subclass of multiparameter quantum affine spaces. We construct finite-dimensional realizations using singular matrices and finite Heisenberg--Weyl operators, as well as infinite-dimensional realizations in terms of bilateral weighted shifts and multiplicative-shift operators. The explicit realizations are generically \emph{purely scalene}: although the ordered triple satisfies the scalene Yang--Baxter equation, its individual constituent operators do not satisfy the ordinary non-braided Yang--Baxter equation. These results provide a representation-independent algebraic framework for constructing Yang--Baxter-irreducible scalene triples and a starting point for investigating their possible applications to quantum integrability.

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Pramod Padmanabhan, Somnath Maity, Vladimir Korepin. 2026-08-21. Multiparameter Quantum Affine Spaces and the Scalene Yang--Baxter Equation. https://arxiv.org/abs/2608.20714

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