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Published online by Cambridge University Press: 14 July 2016
In this paper, we apply coupling methods to study strong ergodicity for Markov processes, and sufficient conditions are presented in terms of the expectations of coupling times. In particular, explicit criteria are obtained for one-dimensional diffusions and birth-death processes to be strongly ergodic. As a by-product, strong ergodicity implies that the essential spectra of the generators for these processes are empty.
Research supported in part by RFDP (No. 20010027007), 973 Project, NSFC (10121101) and NSFC for Distinguished Young Scholars (No. 10025105).