Limit theorems for Gaussian fields via Chaos Expansions and Applications

Fuente: arXiv
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Autore principale: Giorgio, Giacomo
Natura: Preprint
Pubblicazione: 2024
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author Giorgio, Giacomo
author_facet Giorgio, Giacomo
contents 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).
format Preprint
id arxiv_https___arxiv_org_abs_2406_15801
institution arXiv
publishDate 2024
record_format arxiv
spellingShingle Limit theorems for Gaussian fields via Chaos Expansions and Applications
Giorgio, Giacomo
Probability
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).
title Limit theorems for Gaussian fields via Chaos Expansions and Applications
topic Probability
url https://arxiv.org/abs/2406.15801