A C*-Algebraic Model for Locally Noncommutative Spacetimes
  Locally noncommutative spacetimes provide a refined notion of noncommutative spacetimes where the noncommutativity is present only for small distances. Here we discuss a non-perturbative approach based on Rieffel's strict deformation quantization. To this end, we extend the usual C*-algebraic results to a pro-C*-algebraic framework. 
Jakob G. Heller, Nikolai Neumaier, Stefan Waldmann