Transportation-Cost Inequalities on Path Space Over Manifolds with Boundary

Details Transportation-Cost Inequalities on Path Space Over Manifolds with Boundary Transportation-Cost Inequalities on Path Space Over Manifolds with Boundary

2009-08-20

arxiv.org/abs/0908.2891v1

Mathematics

Probability

26 pages

Scientific paper

Let $L=\DD+Z$ for a $C^1$ vector field $Z$ on a complete Riemannian manifold possibly with a boundary. By using the uniform distance, a number of transportation-cost inequalities on the path space for the (reflecting) $L$-diffusion process are proved to be equivalent to the curvature condition $\Ric-\nn Z\ge - K$ and the convexity of the boundary (if exists). These inequalities are new even for manifolds without boundary, and are partly extended to non-convex manifolds by using a conformal change of metric which makes the boundary from non-convex to convex.

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