English

Hodge theory on hyperbolic manifolds of infinite volume

Differential Geometry 2007-05-23 v1 Representation Theory

Abstract

Let Y=Γ\HnY=\Gamma\backslash H^n be a quotient of the hyperbolic space by the action of a discrete convex-cocompact group of isometries. We describe certain spaces of Γ\Gamma-invariant currents on the sphere at infinity of HnH^n with support on the limit set of Γ\Gamma. These spaces are finite-dimensional. The main result identifies the cohomology of YY with a quotient of such spaces. We explain in which sense this result generalizes the classical Hodge theorem for compact quotients. We obtain analogous results for the cohomology groups Hp(Γ,F)H^p(\Gamma,F), where FF is a finite-dimensional representation of the full group of orientation preserving isometries of HnH^n.

Keywords

Cite

@article{arxiv.math/0009038,
  title  = {Hodge theory on hyperbolic manifolds of infinite volume},
  author = {Martin Olbrich},
  journal= {arXiv preprint arXiv:math/0009038},
  year   = {2007}
}

Comments

9 pages, to appear in the Proceedings of "Lie Theory and Its Applications in Physics - Lie III" (World Scientific, 2000)