TY  - INPR
CY  - Athens, OH
ID  - publications46338
UR  - https://publications.ut-capitole.fr/id/eprint/46338/
IS  - N° 3-4
A1  - Bégout, Pascal
A1  - Ildefonso Diaz, Jesus
N2  - This paper completes some previous studies by several authors on the finite time extinction for nonlinear Schrödinger equation when the nonlinear damping term corresponds to the limit cases of some "saturating non-Kerr law" $F(|u|^2)u=\frac{a}{\varepsilon+(|u|^2)^\alpha}u,$ with $a\in\mathbb{C},$ $\varepsilon\geqslant0,$ $2\alpha=(1-m)$ and $m\in[0,1).$ Here we consider the sublinear case $0<m<1$ with a critical damped coefficient: $a\in\mathbb{C}$ is assumed to be in the set $D(m)=\big\{z\in\mathbb{C}; \; \mathrm{Im}(z)>0 \text{ and } 2\sqrt m\mathrm{Im}(z)=(1-m)\mathrm{Re}(z)\big\}.$ Among other things, we know that this damping coefficient is critical, for instance, in order to obtain the monotonicity of the associated operator (see the paper by Liskevich and Perel'muter [16] and the more recent study by Cialdea and Maz'ya [14]). The finite time extinction of solutions is proved by a suitable energy method after obtaining appropiate a priori estimates. Most of the results apply to non-necessarily bounded spatial domains.
VL  - vol. 28
TI  - Finite time extinction for a critically damped Schrödinger equation with a sublinear nonlinearity
AV  - public
EP  - 340
Y1  - 2023///
PB  - Khayyam Publishing, Inc
JF  - Advances in Differential Equations
KW  - Damped Schrödinger equation
KW  - Finite time extinction
KW  - Maximal monotone operators
KW  - Existence and regularity of weak solutions
KW  - Asymptotic behavior
SN  - 1079-9389
SP  - 311
ER  -