Functional central limit theorems for random processes viewed as rough paths were obtained in a wide range of models and settings in recent years. Each result of this kind has described and identified the limit Brownian rough path within the specifically suitable set-up. Taking a unified point of view, we provide simple and exact formulae, of Green-Kubo type, that characterize the limit Brownian rough path and demonstrate how they naturally apply in each case.
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Engel et al. (2024) studied this question.
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