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Mat. Sb., 2005 Volume 196, Number 6, Pages 17–42 (Mi sm1363)

This article is cited in 20 papers

Non-autonomous Ginzburg–Landau equation and its attractors

M. I. Vishik, V. V. Chepyzhov

Institute for Information Transmission Problems, Russian Academy of Sciences

Abstract: The behaviour as $t\to+\infty$ of solutions $\{u(x,t),\ t\geqslant0\}$ of the non-autonomous Ginzburg–Landau (G.–L.) equation is studied. The main attention is focused on the case when the dispersion coefficient $\beta(t)$ in this equation satisfies the inequality $|\beta(t)|>\sqrt3$ for $t\in L$, where $L$ is an unbounded subset of $\mathbb R_+$. In this case the uniqueness theorem for the G.–L. equation is not proved. The trajectory attractor $\mathfrak A$ for this equation is constructed.
If the coefficients and the exciting force are almost periodic (a.p.) in time and the uniqueness condition fails, then the trajectory attractor $\mathfrak A$ is proved to consist precisely of the solutions $\{u(x,t),\ t\geqslant0\}$ of the G.-L. equation that admit a bounded extension as solutions of this equation onto the entire time axis $\mathbb R$.
The behaviour as $t\to+\infty$ of solutions of a perturbed G.–L. equation with coefficients and the exciting force that are sums of a.p. functions and functions approaching zero in the weak sense as $t\to+\infty$ is also studied.

UDC: 517.956

MSC: 35Q55, 35B41, 35B40, 35K55

Received: 15.10.2004

DOI: 10.4213/sm1363


 English version:
Sbornik: Mathematics, 2005, 196:6, 791–815

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