Abstract
We study the large-time behavior in all Lp norms and in different space-time scales of solutions to a nonlocal heat equation in \(\mathbb {R}^{N}\) involving a Caputo α-time derivative and a power of the Laplacian (−Δ)s, s ∈ (0,1), extending recent results by the authors for the case s = 1. The initial data are assumed to be integrable, and, when required, to be also in Lp. The main novelty with respect to the case s = 1 comes from the behaviour in fast scales, for which, thanks to the fat tails of the fundamental solution of the equation, we are able to give results that are not available neither for the case s = 1 nor, to our knowledge, for the standard heat equation, s = 1, α = 1.
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Acknowledgments
This project has received funding from the European Union’s Horizon 2020 research and innovation programme under the Marie Sklodowska-Curie grant agreement No. 777822. C. Cortázar supported by FONDECYT grant 1190102 (Chile). F. Quirós supported by the Spanish Ministry of Science and Innovation, through project MTM2017-87596-P and through the “Severo Ochoa Programme for Centres of Excellence in R&D” (SEV-2015-0554), and by the Spanish National Research Council, through the “Ayuda extraordinaria a Centros de Excelencia Severo Ochoa” (20205CEX001). N. Wolanski supported by CONICET PIP625, Res. 960/12, ANPCyT PICT-2012-0153, UBACYT X117 and MathAmSud 13MATH03 (Argentina).
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Dedicated to Enrique Zuazua on the occasion of his 60th birthday.
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Cortázar, C., Quirós, F. & Wolanski, N. Large-Time Behavior for a Fully Nonlocal Heat Equation. Vietnam J. Math. 49, 831–844 (2021). https://doi.org/10.1007/s10013-020-00452-w
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DOI: https://doi.org/10.1007/s10013-020-00452-w