6 citations · 32 across the 12 of their papers we have counts for
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math.OA2007★ 6 cited
Pseudodifferential operators and weighted normed symbol spaces
Johannes Sjoestrand
In this work we study some general classes of pseudodifferential operators whose symbols are defined in terms of phase space estimates.
math.SP2007★ 1 cited
Rational invariant tori, phase space tunneling, and spectra for non-selfadjoint operators in dimension 2
Michael Hitrik, Johannes Sjoestrand
We study spectral asymptotics and resolvent bounds for non-selfadjoint perturbations of selfadjoint -pseudodifferential operators in dimension 2, assuming that the classical flo…