Proper metrics on locally compact groups, and proper affine isometric actions on Banach spaces
arXiv:math/0606794
Abstract
In this article it is proved, that every locally compact second countable group has a left invariant metric d, which generates the topology on G, and which is proper, ie. every closed d-bounded set in G is compact. Moreover, we obtain the following extension of a result due to N. Brown and E. Guentner: Every locally compact second countable admits a proper affine action on the reflexive and strictly convex Banach space where the direct sum is taken in the -sense.