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arXiv · 2510.15640

Nijenhuis operators and twisted $\mathcal{O}$-operators on Nambu-Poisson algebras

Apurba Das·Fattoum Harrathi·Sami Mabrouk
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Abstract

A ternary Nambu-Poisson algebra (which we call a Nambu-Poisson algebra in the paper) is the underlying algebraic structure of Nambu-Poisson manifolds of order $3$ that appeared in the generalized Hamiltonian mechanics. First, we consider the 2nd cohomology group of a Nambu-Poisson algebra with coefficients in a given representation. Next, we discuss suitable linear deformations of a Nambu-Poisson algebra and show that any such trivial deformation yields a Nijenhuis operator on it. To understand the deformed Nambu-Poisson algebra obtained from a Nijenhuis operator, we introduce a new algebraic structure, which we name NS-Nambu-Poisson algebras. Finally, we consider $\mathcal{O}$-operators twisted by $2$-cocycles and find their close relationships with NS-Nambu-Poisson algebras.

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Apurba Das, Fattoum Harrathi, Sami Mabrouk. 2025-10-17. Nijenhuis operators and twisted $\mathcal{O}$-operators on Nambu-Poisson algebras. https://arxiv.org/abs/2510.15640

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