24-26 September 2024
Bogolyubov Institute for Theoretical Physics (Section 1-4), Institute of Mathematics (Section 5)
Europe/Kiev timezone

Dissipative magnetic 2D Zakharov system in bounded domain

Not scheduled
20m
Institute of Mathematics

Institute of Mathematics

3, Tereschenkivska Str., Kyiv, 01024, Ukraine
Oral MATHEMATICS MATHEMATICS

Speaker

Oleksiy Shcherbyna (V. N. Karazin Kharkiv National University)

Description

We consider the dissipative magnetic Zakharov system in a smooth (2D) bounded domain
$\Omega\subset\mathbb{R}^2$ of the form

$ i E_t + \Delta E - n E + i E\times B +i\gamma_1 E = g_1(x,t), \qquad\qquad x\in \Omega, $

$ n_{tt}+\gamma_2 n_t -\Delta\left(n+|E|^2\right)=g_2(x,t), \qquad\qquad\qquad \qquad x\in \Omega, $

$ B_{tt}-\gamma_3\Delta B_t +\Delta^2\left(B+i E\times \overline{E}\right)=g_3(x,t), \qquad \qquad x\in \Omega, $

where $n(x,t)$ and $B(t, x) = (0, 0, B_3(t, x))$ are the real functions
and $E(x,t)=(E_1(t, x), E_2(t, x), 0)$ is a complex one.

If we omit magnetic field $B$, then the above system is reduced to the dissipative
Zakharov system. This system has been studied by many authors (see [1] and
references therein).

In the case $\Omega=\mathbb{R}^d$ for $d=2,3$ the Cauchy problem for the above system
has been considered in [2]. It was obtained local existence and uniqueness
results. Our main result is the global well-posedness
of the considered problem in some Sobolev type classes and existence of a global attractor.

[1] I. Chueshov and A. Shcherbina, On 2D Zakharov system in a bounded domain, Differential and Integral Equations, 18 (2005), 781-812.

[2] Boling Guo, Jingjun Zhang, Chunxiao Guo. \/, On the Cauchy problem for the magnetic Zakharov system, Monatshefte fur Mathematik, 170 (2013), 89-111.

Primary author

Oleksiy Shcherbyna (V. N. Karazin Kharkiv National University)

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