English

Skorokhod embeddings for two-sided Markov chains

Probability 2015-06-11 v3

Abstract

Let (Xn ⁣:nZ)(X_n \colon n\in\Z) be a two-sided recurrent Markov chain with fixed initial state X0X_0 and let ν\nu be a probability measure on its state space. We give a necessary and sufficient criterion for the existence of a non-randomized time TT such that (XT+n ⁣:nZ)(X_{T+n} \colon n\in\Z) has the law of the same Markov chain with initial distribution ν\nu. In the case when our criterion is satisfied we give an explicit solution, which is also a stopping time, and study its moment properties. We show that this solution minimizes the expectation of ψ(T)\psi(T) in the class of all non-negative solutions, simultaneously for all non-negative concave functions ψ\psi.

Keywords

Cite

@article{arxiv.1407.4734,
  title  = {Skorokhod embeddings for two-sided Markov chains},
  author = {Peter Morters and Istvan Redl},
  journal= {arXiv preprint arXiv:1407.4734},
  year   = {2015}
}

Comments

Revision has been made and some parts of the proof of Theorem 4 have been made clearer

R2 v1 2026-06-22T05:06:46.755Z