The trace formula for singular perturbations of the Laplacian on hyperbolic surfaces

Details The trace formula for singular perturbations of the Laplacian on hyperbolic surfaces The trace formula for singular perturbations of the Laplacian on hyperbolic surfaces

2010-02-15

arxiv.org/abs/1002.2930v1

Physics

Mathematical Physics

42 pages, 0 figures

Scientific paper

We prove an analogue of Selberg's trace formula for a delta potential on a hyperbolic surface of finite volume. For simplicity we restrict ourselves to surfaces with at most one cusp, but our methods can easily be extended to any number of cusps. In the case of a noncompact surface we derive perturbative analogues of Maass cusp forms, residual Maass forms and nonholomorphic Eisenstein series. The latter satisfy a functional equation as in the classical case. We also introduce a perturbative analogue of Selberg's zeta function and apply the trace formula to prove its meromorphic continuation to the complex plane as well as a functional equation.

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