BÉNÉFICE, Magalie

Metadatos

Mostrar el registro completo del ítem

Licencia de uso del documento

BÉNÉFICE, Magalie
Institut de Mathématiques de Bordeaux [IMB]
Université de Bordeaux [UB]

Idioma

Document de travail - Pré-publication

Resumen en inglés

In this article we continue the study of couplings of subelliptic Brownian motions on the subRiemannian manifolds SU (2) and SL(2, R). Similar to the case of the Heisenberg group, this subelliptic Brownian motion can be considered as a Brownian motion on the sphere (resp. the hyperbolic plane) together with its swept area modulo 4π. Using this structure, we construct an explicit non co-adapted successful coupling on SU (2) and, under strong conditions on the starting points, on SL(2, R) too. This strategy uses couplings of Brownian bridges, taking inspiration into the work from Banerjee, Gordina and Mariano [3] on the Heisenberg group. We prove that the coupling rate associated to these constructions is exponentially decreasing in time and proportionally to the subRiemannian distance between the starting points. We also give some gradient inequalities that can be deduced from the estimation of this coupling rate.< Leer menos

Palabras clave en inglés

SubRiemannian manifolds

Brownian motion

Coupling

Non co-adapted coupling

Successful coupling

Metadatos

Compartir este ítem

Licencia de uso del documento

Non co-adapted couplings of Brownian motions on subRiemannian manifolds

Idioma

Resumen en inglés

Palabras clave en inglés

URI

Orígen

Centros de investigación