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math.SP2003
Non-selfadjoint perturbations of selfadjoint operators in 2 dimensions II. Vanishing Averages
Michael Hitrik, Johannes Sjoestrand
This is the second in a series of works devoted to small non-selfadjoint perturbations of selfadjoint semiclassical pseudodifferential operators in dimension 2. As in our previous…
math.SP2003
Eigenfrequencies and expansions for damped wave equations
Michael Hitrik
We study eigenfrequencies and propagator expansions for damped wave equations on compact manifolds. Under the assumption of geometric control, the propagator is shown to admit an e…