Barycenters of measures transported by stochastic flows

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dc.creatorArnaudon, Marc
dc.creatorLi, Xue-Mei
dc.date2005-07-22
dc.date.accessioned2026-07-07T05:21:54Z
dc.date.available2026-07-07T05:21:54Z
dc.descriptionWe investigate the evolution of barycenters of masses transported by stochastic flows. The state spaces under consideration are smooth affine manifolds with certain convexity structure. Under suitable conditions on the flow and on the initial measure, the barycenter {Z_t} is shown to be a semimartingale and is described by a stochastic differential equation. For the hyperbolic space the barycenter of two independent Brownian particles is a martingale and its conditional law converges to that of a Brownian motion on the limiting geodesic. On the other hand for a large family of discrete measures on suitable Cartan-Hadamard manifolds, the barycenter of the measure carried by an unstable Brownian flow converges to the Busemann barycenter of the limiting measure.
dc.descriptionPublished at http://dx.doi.org/10.1214/009117905000000071 in the Annals of Probability (http://www.imstat.org/aop/) by the Institute of Mathematical Statistics (http://www.imstat.org)
dc.identifierhttps://arxiv.org/abs/math/0507460
dc.identifierhttp://arxiv.org/abs/math/0507460
dc.identifierAnnals of Probability 2005, Vol. 33, No. 4, 1509-1543
dc.identifierdoi:10.1214/009117905000000071
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/75864
dc.subjectProbability
dc.subject60G60 (Primary) 60G57, 60H10, 60J65, 60G44, 60F05, 60F15 (Secondary)
dc.titleBarycenters of measures transported by stochastic flows
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