Mathematics – Differential Geometry
Scientific paper
2009-06-16
Mathematics
Differential Geometry
23 pages
Scientific paper
We study the triple $(G,\pi,\prs)$ where $G$ is a connected and simply connected Lie group, $\pi$ and $\prs$ are, respectively, a multiplicative Poisson tensor and a left invariant Riemannian metric on $G$ such that the necessary conditions, introduced by Hawkins, to the existence of a non commutative deformation (in the direction of $\pi$) of the spectrale triple associated to $\prs$ are satisfied. We show that the geometric problem of the classification of such triple $(G,\pi,\prs)$ is equivalent to an algebraic one. We solve this algebraic problem in low dimensions and we give the list of all $(G,\pi,\prs)$ satisfying Hawkins's conditions, up to dimension four.
Bahayou Amine
Boucetta Mohamed
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