{ "id": "2406.15801", "version": "v1", "published": "2024-06-22T10:01:23.000Z", "updated": "2024-06-22T10:01:23.000Z", "title": "Limit theorems for Gaussian fields via Chaos Expansions and Applications", "authors": [ "Giacomo Giorgio" ], "comment": "PhD thesis", "categories": [ "math.PR" ], "abstract": "In this PhD thesis, we apply a combination of Malliavin calculus and Stein's method in the framework of probability approximations. The specific problems we tackle with these methods are motivated by probabilistic models in cosmology (Part I: Quantitative CLTs for non linear functionals of random hyperspherical harmonics) and finance (Part II: The fractional Ornstein-Uhlenbeck process in rough volatility modelling). In this second part we also apply techniques from Large Deviations theory (Section: Short-time asymptotics for non self-similar stochastic volatility models).", "revisions": [ { "version": "v1", "updated": "2024-06-22T10:01:23.000Z" } ], "analyses": { "keywords": [ "gaussian fields", "chaos expansions", "limit theorems", "non self-similar stochastic volatility models", "applications" ], "tags": [ "dissertation" ], "note": { "typesetting": "TeX", "pages": 0, "language": "en", "license": "arXiv", "status": "editable" } } }