Abstract
The dispersive properties of the wave equation u tt +Au=0 are considered, where A is either the Hermite operator −Δ+|x|2 or the twisted Laplacian −(∇ x −iy)2/2−(∇ y +ix)2/2. In both cases we prove optimal L 1−L ∞ dispersive estimates. More generally, we give some partial results concerning the flows exp (itL ν) associated to fractional powers of the twisted Laplacian for 0<ν<1.
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Communicated by Hans Feichtinger.
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D’Ancona, P., Pierfelice, V. & Ricci, F. On the Wave Equation Associated to the Hermite and the Twisted Laplacian. J Fourier Anal Appl 16, 294–310 (2010). https://doi.org/10.1007/s00041-009-9104-y
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DOI: https://doi.org/10.1007/s00041-009-9104-y
Keywords
- Wave equation
- Strichartz estimates
- Decay estimates
- Dispersive equations
- Schrödinger equation
- Harmonic analysis
- Almost periodicity