A Mourre estimate and related bounds for hyperbolic manifolds with cusps of non-maximal rank
The authors consider the Laplacian on quotients of hyperbolic n-space by a geometrically finite discrete group of hyperbolic isometries with parabolic subgroups of non-maximal rank. They prove a ``Mourre estimate'' and commutator estimates on the Laplacian which imply absolute continuity of the spectrum and quantitative resolvent estimates.
scientific article; zbMATH DE number 4205468
scientific article