Asymptotic behavior for nonlocal diffusion equations
We study the asymptotic behavior for nonlocal diffusion models of the form ut = J * u - u in the whole RN or in a bounded smooth domain with Dirichlet or Neumann boundary conditions. In RN we obtain that the long time behavior of the solutions is determined by the behavior of the Fourier transform o...
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| Acceso en línea: | http://hdl.handle.net/20.500.12110/paper_00217824_v86_n3_p271_Chasseigne http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00217824_v86_n3_p271_Chasseigne_oai |
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I28-R145-paper_00217824_v86_n3_p271_Chasseigne_oai2020-10-19 Chasseigne, E. Chaves, M. Rossi, J.D. 2006 We study the asymptotic behavior for nonlocal diffusion models of the form ut = J * u - u in the whole RN or in a bounded smooth domain with Dirichlet or Neumann boundary conditions. In RN we obtain that the long time behavior of the solutions is determined by the behavior of the Fourier transform of J near the origin, which is linked to the behavior of J at infinity. If over(J, ̂) (ξ) = 1 - A | ξ |α + o (| ξ |α) (0 < α ≤ 2), the asymptotic behavior is the same as the one for solutions of the evolution given by the α / 2 fractional power of the Laplacian. In particular when the nonlocal diffusion is given by a compactly supported kernel the asymptotic behavior is the same as the one for the heat equation, which is yet a local model. Concerning the Dirichlet problem for the nonlocal model we prove that the asymptotic behavior is given by an exponential decay to zero at a rate given by the first eigenvalue of an associated eigenvalue problem with profile an eigenfunction of the first eigenvalue. Finally, we analyze the Neumann problem and find an exponential convergence to the mean value of the initial condition. © 2006 Elsevier SAS. All rights reserved. Fil:Rossi, J.D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. application/pdf http://hdl.handle.net/20.500.12110/paper_00217824_v86_n3_p271_Chasseigne info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar J. Math. Pures Appl. 2006;86(3):271-291 Dirichlet boundary conditions Fractional Laplacian Neumann boundary conditions Nonlocal diffusion Asymptotic behavior for nonlocal diffusion equations info:eu-repo/semantics/article info:ar-repo/semantics/artículo info:eu-repo/semantics/publishedVersion http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00217824_v86_n3_p271_Chasseigne_oai |
| institution |
Universidad de Buenos Aires |
| institution_str |
I-28 |
| repository_str |
R-145 |
| collection |
Repositorio Digital de la Universidad de Buenos Aires (UBA) |
| topic |
Dirichlet boundary conditions Fractional Laplacian Neumann boundary conditions Nonlocal diffusion |
| spellingShingle |
Dirichlet boundary conditions Fractional Laplacian Neumann boundary conditions Nonlocal diffusion Chasseigne, E. Chaves, M. Rossi, J.D. Asymptotic behavior for nonlocal diffusion equations |
| topic_facet |
Dirichlet boundary conditions Fractional Laplacian Neumann boundary conditions Nonlocal diffusion |
| description |
We study the asymptotic behavior for nonlocal diffusion models of the form ut = J * u - u in the whole RN or in a bounded smooth domain with Dirichlet or Neumann boundary conditions. In RN we obtain that the long time behavior of the solutions is determined by the behavior of the Fourier transform of J near the origin, which is linked to the behavior of J at infinity. If over(J, ̂) (ξ) = 1 - A | ξ |α + o (| ξ |α) (0 < α ≤ 2), the asymptotic behavior is the same as the one for solutions of the evolution given by the α / 2 fractional power of the Laplacian. In particular when the nonlocal diffusion is given by a compactly supported kernel the asymptotic behavior is the same as the one for the heat equation, which is yet a local model. Concerning the Dirichlet problem for the nonlocal model we prove that the asymptotic behavior is given by an exponential decay to zero at a rate given by the first eigenvalue of an associated eigenvalue problem with profile an eigenfunction of the first eigenvalue. Finally, we analyze the Neumann problem and find an exponential convergence to the mean value of the initial condition. © 2006 Elsevier SAS. All rights reserved. |
| format |
Artículo Artículo publishedVersion |
| author |
Chasseigne, E. Chaves, M. Rossi, J.D. |
| author_facet |
Chasseigne, E. Chaves, M. Rossi, J.D. |
| author_sort |
Chasseigne, E. |
| title |
Asymptotic behavior for nonlocal diffusion equations |
| title_short |
Asymptotic behavior for nonlocal diffusion equations |
| title_full |
Asymptotic behavior for nonlocal diffusion equations |
| title_fullStr |
Asymptotic behavior for nonlocal diffusion equations |
| title_full_unstemmed |
Asymptotic behavior for nonlocal diffusion equations |
| title_sort |
asymptotic behavior for nonlocal diffusion equations |
| publishDate |
2006 |
| url |
http://hdl.handle.net/20.500.12110/paper_00217824_v86_n3_p271_Chasseigne http://repositoriouba.sisbi.uba.ar/gsdl/cgi-bin/library.cgi?a=d&c=artiaex&d=paper_00217824_v86_n3_p271_Chasseigne_oai |
| work_keys_str_mv |
AT chasseignee asymptoticbehaviorfornonlocaldiffusionequations AT chavesm asymptoticbehaviorfornonlocaldiffusionequations AT rossijd asymptoticbehaviorfornonlocaldiffusionequations |
| _version_ |
1766026541293109248 |