Abstract
AbstractIn this work, we prove the existence of global (in time) small data solutions for wave equations with two dissipative terms and with power nonlinearity $$|u|^p$$
|
u
|
p
or nonlinearity of derivative type $$|u_t|^p$$
|
u
t
|
p
, in any space dimension $$n\geqslant 1$$
n
⩾
1
, for supercritical powers $$p>{\bar{p}}$$
p
>
p
¯
. The presence of two dissipative terms strongly influences the nature of the problem, allowing us to derive $$L^r-L^q$$
L
r
-
L
q
long time decay estimates for the solution in the full range $$1\leqslant r\leqslant q\leqslant \infty $$
1
⩽
r
⩽
q
⩽
∞
. The optimality of the critical exponents is guaranteed by a nonexistence result for subcritical powers $$p<{\bar{p}}$$
p
<
p
¯
.
Funder
Università degli Studi di Bari Aldo Moro
Publisher
Springer Science and Business Media LLC
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