Quantization via Deformation of Prequantization
  We introduce the notion of a "Souriau bracket" on a prequantum circle bundle $Y$ over a phase space $X$ and explain how a deformation of $Y$ in the direction of this bracket provides a genuine quantization of $X$. 
Christian Duval (CPT), Mark J. Gotay (PIMS)
math-ph math.MP