Geodesic restrictions for the Casimir operator
classification
🧮 math.AP
math.RT
keywords
casimirhyperbolicoperatorbeyondboundboundsbundlecertain
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We consider the hyperbolic Casimir operator C defined on the tangent sphere bundle SY of a compact hyperbolic Riemann surface Y. We prove a nontrivial bound on the L^2-norm of the restriction of eigenfunctions of C to certain natural hypersurfaces in SY. The result that we obtain goes beyond known (sharp) local bounds of L. Hormander.
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