Abstract.
In this paper we present a parabolic approach to studying the diffusive long time behaviour of solutions to the Cauchy problem:
$$ \left\{ \begin{aligned} & u_{{ t t }} + u_{t} - \Delta u = 0,x \in R^{N} ,t \ > 0,\\ & u(\cdot, 0) = u_{0} ,x \in R^{N} ,\\ & u(\cdot, 0) = u_{1} ,x \in R^{N} x; \end{aligned} \right. $$
(1)
where u0 and u1 satisfy suitable assumptions.
After an appropriate scaling we obtain the convergence to a stationary solutio n in Lq norm (1 ≤ q < ∞).
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Cavazzoni, R. On the long time behaviour of solutions to dissipative wave equations in \(\mathbb{R}^{2} \). Nonlinear differ. equ. appl. 13, 193–204 (2006). https://doi.org/10.1007/s00030-005-0035-2
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DOI: https://doi.org/10.1007/s00030-005-0035-2