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arXiv · 2404.16713

Geometry of paraquaternionic contact structures

Marina Tchomakova·Stefan Ivanov·Simeon Zamkovoy
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Abstract

We introduce the notion of paraquaternionic contact structures (pqc structures), which turns out to be a generalization of the para 3-Sasakian geometry. We derive a distinguished linear connection preserving the pqc structure. Its torsion tensor is expressed explicitly in terms of the structure tensors and the structure equations of a pqc manifold are presented. We define pqc-Einstein manifolds and show that para 3-Sasakian spaces are precisely pqc manifolds, which are pqc-Einstein. Furthermore, we introduce the paraquaternionic Heisenberg qroup and show that it is the flat model of the pqc geometry.

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Marina Tchomakova, Stefan Ivanov, Simeon Zamkovoy. 2024-04-25. Geometry of paraquaternionic contact structures. https://arxiv.org/abs/2404.16713

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