Asymptotic behavior of classical solutions to a system of semilinear wave equations in low space dimensions
Asymptotic behavior of classical solutions to a system of semilinear wave equations in low space dimensions
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低空间维度半线性波动方程组经典解的渐近行为
DOI:
10.2969/jmsj/05340875
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发表时间:
1999
期刊:
影响因子:
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通讯作者:
K. Kubota
中科院分区:
文献类型:
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作者:
H. Kubo;K. Kubota
. We give a new a priori estimate for a classical solution of the inhomogeneous wave equation in R n (cid:2) R , where n ˆ 2 ; 3. As an application of the estimate, we study the asymptotic behavior as t ! Gy of solutions u … x ; t † and v … x ; t † to a system of semilinear wave equations: q 2 t u ÿ D u ˆ j v j p , q 2 t v ÿ D v ˆ j u j q in R n (cid:2) R , where … n ‡ 1 † = … n ÿ 1 † < p a q with n ˆ 2 or n ˆ 3. More precisely, it is known that there exists a critical curve G ˆ G … p ; q ; n † ˆ 0 on the p - q plane such that, when G > 0, the Cauchy problem for the system has a global solution with small initial data and that, when G a 0, a solution of the problem generically blows up in ®nite time even if the initial data are small. In this paper, when G > 0, we construct a global solution … u … x ; t † ; v … x ; t †† of the system which is asymptotic to a pair of solutions to the homogeneous wave equation with small initial data given, as t ! ÿ y , in the sense of both the energy norm and the pointwise convergence. We also show that the scattering operator exists on a dense set of a neighborhood of 0 in the energy space.
DOI:
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发表时间:
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期刊:
影响因子:
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作者:
通讯作者:
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DOI:
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发表时间:
2006
期刊:
Hokkaido Math. J. 35・3
影响因子:
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作者:
H.Kubo;M.Ohta
通讯作者:
M.Ohta