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arXiv 1211.3232math.APmath.DG
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与Yamabe流有关的nonlinear elliptic方程的精确衰减率

Exact decay rate of a nonlinear elliptic equation related to the Yamabe flow

Shu-Yu Hsu

摘要:

设0<m<(n-2)/n,n>2,对于某个常数$ρ>0$,有$α=(2β+ρ)/(1-m)$和$β>mρ/(n-2-mn)$.设v是$\frac{n-1}{m}Δv^m+αv+βx\cdot\nabla v=0$在$R^n$中的径向对称对称解,v>0.当m=(n-2)/(n+2)时,度规$g=v^{4/(n+2)}dx^2$对应于一个具有正截面曲率的局部共形平坦Yamabe收缩梯度孤子.证明了上述非线性椭圆型方程的解$v$具有精确的衰减率$\lim_{r\to\infty}r^2v(r)^{1-m}=\frac{2(n-1)(n(1-m)-2)}{(1-m)(α(1-m)-2β)}$。

英文摘要:

Let 0<m<(n-2)/n, n>2, $α=(2β+ρ)/(1-m)$ and $β>mρ/(n-2-mn)$ for some constant $ρ>0$. Suppose v is a radially symmetric symmetric solution of $\frac{n-1}{m}Δv^m+αv+βx\cdot\nabla v=0$, v>0, in $R^n$. When m=(n-2)/(n+2), the metric $g=v^{4/(n+2)}dx^2$ corresponds to a locally conformally flat Yamabe shrinking gradient soliton with positive sectional curvature. We prove that the solution $v$ of the above nonlinear elliptic equation has the exact decay rate $\lim_{r\to\infty}r^2v(r)^{1-m}=\frac{2(n-1)(n(1-m)-2)}{(1-m)(α(1-m)-2β)}$.

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