Universal self-similarity of porous media equation with absorption: the critical exponent case
Abbreviated Journal Title
J. Differ. Equ.
large time behavior; non-linear parabolic equation; Cauchy problem; self-similar solutions; LARGE TIME BEHAVIOR; NONLINEAR PARABOLIC EQUATIONS; ASYMPTOTIC-BEHAVIOR; Mathematics
In this paper we study the large time behavior of non-negative solutions to the Cauchy problem of u(t) = Deltau(m) - u(q) in R-N x (0, infinity), where m > 1 and q = q(c) equivalent to m + 2/N is a critical exponent. For non-negative initial value u(x, 0) = u(0) (x) is an element of L-1 (R-N), we show that the solution converges, if u(0) (x) (1 + \x\)(k) is bounded for some k > N, to a unique fundamental solution of u(t) = Deltau(m), independent of the initial value, with additional logarithmic anomalous decay exponent in time as t --> infinity. (C) 2004 Elsevier Inc. All rights reserved.
Journal of Differential Equations
"Universal self-similarity of porous media equation with absorption: the critical exponent case" (2004). Faculty Bibliography 2000s. 4715.