The Cauchy problem for the (generalized) Kadomtsev-Petviashvili-Burgers equation
The Cauchy problem for the (generalized) Kadomtsev-Petviashvili-Burgers equation
复制标题
(广义)Kadomtsev-Petviashvili-Burgers 方程的柯西问题
DOI:
10.57262/die/1356124296
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发表时间:
2000
影响因子:
1.4
通讯作者:
L. Molinet
中科院分区:
文献类型:
--
作者:
L. Molinet
We investigate the Cauchy problem for the generalized Kadomtsev-Petviashvili-Burgers equation
u t +u xxx +u p u x +ev y -νu xx =0,v x =u y ,u(0)=ϕ
in Sobolev spaces. This nonlinear wave equation has both dispersive and dissipative parts. After showing local existence by the contraction principle for initial data ϕ∈H s (ℝ 2 ) such that ℱ -1 (k 2 k 1 ϕ ^)∈H r (ℝ 2 ), 0≤r≤s-1, we extend the solutions for all positive times. Whereas for e=-1 and 1≤p<4/3 this is done without any assumption on the initial data, we require a smallness condition on the initial data otherwise. In a last part, we prove a local smoothing effect in the transverse direction, which enables us to establish the existence of weak global solutions in L 2 (ℝ 2 ) when e=-1 and 1≤p<4/3.