Limit Theorems for One-Dimensional Homogenized Diffusion Processes

We present two limit theorems, a mean ergodic and a central limit theorem, for a specific class of one-dimensional diffusion processes that depend on a small-scale parameter ε ε and converge weakly to a homogenized diffusion process in the limit ε → 0 ε → 0 . In these results, we allow for the time horizon to blow up such that T_ε → ∞ T ε → ∞ as ε → 0 ε → 0 . The novelty of the results arises from the circumstance that many quantities are unbounded for ε → 0 ε → 0 , so that formerly established theory is not directly applicable here and a careful investigation of all relevant ε ε -dependent terms is required. As a mathematical application, we then use these limit theorems to prove asymptotic properties of a minimum distance estimator for parameters in a homogenized diffusion equation.