
arXiv: 1206.0768
We extend our recent results on propagation of semiclassical resolvent estimates through trapped sets when a priori polynomial resolvent bounds hold. Previously we obtained non-trapping estimates in trapping situations when the resolvent was sandwiched between cutoffs χ microlocally supported away from the trapping: ∥χR h (E+i0)χ∥=𝒪(h -1 ), a microlocal version of a result of Burq and Cardoso-Vodev. We now allow one of the two cutoffs, χ ˜, to be supported at the trapped set, giving ∥χR h (E+i0)χ ˜∥=𝒪(a(h)h -1 ) when the a priori bound is ∥χ ˜R h (E+i0)χ ˜∥=𝒪(a(h)h -1 ).
Propagation of singularities; initial value problems on manifolds, Mathematics - Analysis of PDEs, resolvent estimates, FOS: Mathematics, Wave equation, propagation of singularities, trapping, 58J47, 35L05, Analysis of PDEs (math.AP)
Propagation of singularities; initial value problems on manifolds, Mathematics - Analysis of PDEs, resolvent estimates, FOS: Mathematics, Wave equation, propagation of singularities, trapping, 58J47, 35L05, Analysis of PDEs (math.AP)
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