LOCALLY SMOOTH OPERATORS AND THE LIMITING ABSORPTION PRINCIPLE FOR N-BODY HAMILTONIANS

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Abstract
We develop a variant of the (abstract) Mourre theory under very weak assumptions of regularity on the hamiltonian H with respect to the conjugate operator A. We find large classes of H-smooth operators and prove the limiting absorption principle in a class of (abstract) Besov spaces. As an example we extend the results of Agmon and Hörmander from the two-body to the N-body case.
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