Mathematics – Differential Geometry
Scientific paper
1999-10-19
Mathematics
Differential Geometry
14 pages, LaTeX; Proc. of the workshop "Noncommutative Differential Geometry and its Applications to Physics", Shonan-Kokusaim
Scientific paper
This article is a survey of recent work of the authors developing a new approach to quantization based on the equivariance with respect to some Lie group of symmetries. Examples are provided by conformal and projective differential geometry: given a smooth manifold M endowed with a flat conformal/projective structure, we establish a canonical isomorphism between the space of symmetric contravariant tensor fields on M and the space of differential operators on M. This leads to a notion of conformally/projectively invariant star-product on $T^*M$.
Duval Christian
Lecomte P.
Ovsienko Valentin
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