Unbounded solutions of the nonlocal heat equation

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November 2011, 10(6): 1663-1686. doi: 10.3934/cpaa.2011.10.1663

Unbounded solutions of the nonlocal heat equation

C. Brändle ^1, , E. Chasseigne ^2, and Raúl Ferreira ^3,

1.	Departamento de Matemáticas, U. Carlos III de Madrid, 28911 Leganés, Spain
2.	Laboratoire de Mathématiques et Physique Théorique, U. F. Rabelais, Parc de Grandmont, 37200 Tours, France
3.	Departamento de Matemática Aplicada, Universidad Complutense de Madrid, 28040 Madrid

Received February 2010 Revised January 2011 Published May 2011

Abstract
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We consider the Cauchy problem posed in the whole space for the following nonlocal heat equation: $ u_t = J\ast u -u, $ where $J$ is a symmetric continuous probability density. Depending on the tail of $J$, we give a rather complete picture of the problem in optimal classes of data by: $(i)$ estimating the initial trace of (possibly unbounded) solutions; $(ii)$ showing existence and uniqueness results in a suitable class; $(iii)$ proving blow-up in finite time in the case of some critical growths; $(iv)$ giving explicit unbounded polynomial solutions.

Keywords: initial trace, Non-local diffusion, optimal classes of data..

Mathematics Subject Classification: 35A01, 35A02, 45A0.

Citation: C. Brändle, E. Chasseigne, Raúl Ferreira. Unbounded solutions of the nonlocal heat equation. Communications on Pure and Applied Analysis, 2011, 10 (6) : 1663-1686. doi: 10.3934/cpaa.2011.10.1663

References:

[1]	N. Alibaud and C. Imbert, Fractional semi-linear parabolic equations with unbounded data, Trans. Amer. Math. Soc., 361 (2009), 2527-2566. doi: 10.1090/S0002-9947-08-04758-2.
[2]	C. Brändle and E. Chasseigne, Large deviations estimates for some non-local equations. Fast decaying kernels and explicit bounds, Nonlinear Analysis, 71 (2009), 5572-5586. doi: 10.1016/j.na.2009.04.059.
[3]	C. Brändle and E. Chasseigne, Large Deviations estimates for some non-local equations. General bounds and applications,, to appear in Trans. Amer. Math. Soc, ().
[4]	P. Carr, H. Geman, D. B. Madan and M. Yor, Stochastic volatility for Lévy processes, Math. Finance, 13 (2003), 345-382. doi: 10.1111/1467-9965.00020.
[5]	E. Chasseigne, M. Chaves and J. D. Rossi, Asymptotic behavior for nonlocal diffusion equations, J. Math. Pures Appl., 86 (2006), 271-291. doi: 10.1016/j.matpur.2006.04.005.
[6]	E. Chasseigne and R. Ferreira, Isothermalization for a Non-local Heat Equation,, preprint, ().
[7]	F. John, "Partial Differential Equations," 4nd edition, Applied Mathematical Sciences, 1, Springer-Verlag, New York, 1982.

show all references

References:

[1]	N. Alibaud and C. Imbert, Fractional semi-linear parabolic equations with unbounded data, Trans. Amer. Math. Soc., 361 (2009), 2527-2566. doi: 10.1090/S0002-9947-08-04758-2.
[2]	C. Brändle and E. Chasseigne, Large deviations estimates for some non-local equations. Fast decaying kernels and explicit bounds, Nonlinear Analysis, 71 (2009), 5572-5586. doi: 10.1016/j.na.2009.04.059.
[3]	C. Brändle and E. Chasseigne, Large Deviations estimates for some non-local equations. General bounds and applications,, to appear in Trans. Amer. Math. Soc, ().
[4]	P. Carr, H. Geman, D. B. Madan and M. Yor, Stochastic volatility for Lévy processes, Math. Finance, 13 (2003), 345-382. doi: 10.1111/1467-9965.00020.
[5]	E. Chasseigne, M. Chaves and J. D. Rossi, Asymptotic behavior for nonlocal diffusion equations, J. Math. Pures Appl., 86 (2006), 271-291. doi: 10.1016/j.matpur.2006.04.005.
[6]	E. Chasseigne and R. Ferreira, Isothermalization for a Non-local Heat Equation,, preprint, ().
[7]	F. John, "Partial Differential Equations," 4nd edition, Applied Mathematical Sciences, 1, Springer-Verlag, New York, 1982.

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