Abstract
We consider a class of Fourier integral operators, globally defined on \({{\mathbb R}^{d}}\) , with symbols and phases satisfying product type estimates (the so-called SG or scattering classes). We prove a sharp continuity result for such operators when acting on the modulation spaces M p. The minimal loss of derivatives is shown to be d|1/2 − 1/p|. This global perspective produces a loss of decay as well, given by the same order. Strictly related, striking examples of unboundedness on L p spaces are presented.
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Cordero, E., Nicola, F. & Rodino, L. On the global boundedness of Fourier integral operators. Ann Glob Anal Geom 38, 373–398 (2010). https://doi.org/10.1007/s10455-010-9219-z
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DOI: https://doi.org/10.1007/s10455-010-9219-z