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arXiv · 2310.03816

Solutions to the constant Yang-Baxter equation: additive charge conservation in three dimensions

Jarmo Hietarinta·Paul Martin·Eric C. Rowell
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Abstract

We find all solutions to the constant Yang--Baxter equation $R_{12}R_{13}R_{23}=R_{23}R_{13}R_{12}$ in three dimensions, subject to an additive charge-conservation ansatz. This ansatz is a generalisation of (strict) charge-conservation, for which a complete classification in all dimensions was recently obtained. Additive charge-conservation introduces additional sector-coupling parameters -- in 3 dimensions there are $4$ such parameters. In the generic dimension 3 case, in which all of the $4$ parameters are nonzero, we find there is a single 3 parameter family of solutions. We give a complete analysis of this solution, giving the structure of the centraliser (symmetry) algebra in all orders. We also solve the remaining cases with three, two, or one nonzero sector-coupling parameter(s).

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Jarmo Hietarinta, Paul Martin, Eric C. Rowell. 2023-10-05. Solutions to the constant Yang-Baxter equation: additive charge conservation in three dimensions. https://doi.org/10.1098/rspa.2023.0810

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