Limit theorems for some long range random walks on nilpotent groups
By Tianyi Zheng
We consider a natural class of long range random walks on nilpotent groups and develop limit theorems for these walks. The limiting process lives on a nilpotent Lie group which carries an adapted dilation structure and a stable-like process which appears as the limit of a rescaled version of the random walk. Both the limit group and the limit process on that group depend on the random walk. In addition, the Donsker-type functional limit theorem is complemented by a local limit theorem.
Joint with Z.Q. Chen, T. Kumagai, L. Saloff-Coste and J. Wang.