5 citations · 9 across the 6 of their papers we have counts for
6 papers
Fractal upper bounds on the density of semiclassical resonances
J. Sjoestrand, M. Zworski
For semiclassical problems we establish upper bounds on the number of resonances in boxes of size along the real axis, in terms of the dimension of the set of trapped trajector…
Non-selfadjoint perturbations of selfadjoint operators in 2 dimensions IIIa. One branching point
M. Hitrik, J. Sjoestrand
This is the third in a series of works devoted to spectral asymptotics for non-selfadjoint perturbations of selfadjoint -pseudodifferential operators in dimension 2. We assume t…
Diophantine tori and spectral asymptotics for non-selfadjoint operators
Michael Hitrik, Johannes Sjoestrand, San Vu Ngoc
We study spectral asymptotics for small non-selfadjoint perturbations of selfadjoint -pseudodifferential operators in dimension 2, assuming that the classical flow of the unpert…
Semiclassical analysis for the Kramers-Fokker-Planck equation
Frederic Herau, Johannes Sjoestrand, Christiaan C. Stolk
We study some accurate semiclassical resolvent estimates for operators that are neither selfadjoint nor elliptic, and applications to the Cauchy problem. In particular we get a pre…
The Calderón problem with partial data
C. E. Kenig, J. Sjoestrand, G. Uhlmann
In this paper we improve an earlier result by Bukhgeim and Uhlmann, by showing that in dimension larger than or equal to three, the knowledge of the Cauchy data for the Schrödinger…
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…