Author:
Casteras Jean-Baptiste,Monsaingeon Léonard
Abstract
AbstractIn this paper, we construct invariant measures and global-in-time solutions for a fractional Schrödinger equation with a Moser–Trudinger type nonlinearity $$\begin{aligned} i\partial _t u= (-\Delta )^{\alpha }u+ 2\beta u e^{\beta |u|^2} \qquad \text{ for }\qquad (x,t)\in \ M\times \mathbb {R}\end{aligned}$$
i
∂
t
u
=
(
-
Δ
)
α
u
+
2
β
u
e
β
|
u
|
2
for
(
x
,
t
)
∈
M
×
R
on a compact Riemannian manifold M without boundary of dimension $$d\ge 2$$
d
≥
2
. To do so, we use the so-called Inviscid-Infinite-dimensional limits introduced by Sy (’19) and Sy and Yu (’21). More precisely, we show that if $$s>d/2$$
s
>
d
/
2
or if $$s\le d/2$$
s
≤
d
/
2
and $$s\le 1+\alpha $$
s
≤
1
+
α
, there exists an invariant measure $$\mu ^{s}$$
μ
s
and a set $$\Sigma ^s \subset H^s$$
Σ
s
⊂
H
s
containing arbitrarily large data such that $$\mu ^{s}(\Sigma ^s ) =1$$
μ
s
(
Σ
s
)
=
1
and that (E) is globally well-posed on $$\Sigma ^{s}$$
Σ
s
. In the case when $$s>d/2$$
s
>
d
/
2
, we also obtain a logarithmic upper bound on the growth of the $$H^r$$
H
r
-norm of our solutions for $$r<s$$
r
<
s
. This gives new examples of invariant measures supported in highly regular spaces in comparison with the Gibbs measure constructed by Robert (’21) for the same equation.
Funder
Fundação para a Ciência e a Tecnologia
Publisher
Springer Science and Business Media LLC
Subject
Applied Mathematics,Modeling and Simulation,Statistics and Probability
Reference27 articles.
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