$F$ -调和映射和非齐次Landau-Lifshitz方程的Bubbling定位
Bubbling location for $F$-harmonic maps and Inhomogeneous Landau-Lifshitz equations
摘要：
设$f$是闭黎曼曲面（M，g）上的正光滑函数.定义从$M$到黎曼流形$(N,h)$的映射$u$的$f-energy$为$$E_f(u)=\int_Mf|\nabla u|^2dV_g.$$本文研究了$E_f$的Palais-Smale序列的爆破性质.我们将证明，如果Palais-Smale序列不是紧的，那么它一定在$f$的某些临界点处爆破。作为一个序列，如果一个非齐次Landau-Lifshitz系统，即$$u_t=u\timesτ_f(u)+τ_f(u),\s u:M\to S^2$$的解在时间$\infty$爆破，那么爆破点一定是$f$的临界点。
英文摘要：
Let $f$ be a positive smooth function on a close Riemann surface (M,g). The $f-energy$ of a map $u$ from $M$ to a Riemannian manifold $(N,h)$ is defined as $$E_f(u)=\int_Mf|\nabla u|^2dV_g.$$ In this paper, we will study the blow-up properties of Palais-Smale sequences for $E_f$. We will show that, if a Palais-Smale sequence is not compact, then it must blows up at some critical points of $f$. As a sequence, if an inhomogeneous Landau-Lifshitz system, i.e. a solution of $$u_t=u\timesτ_f(u)+τ_f(u),\s u:M\to S^2$$ blows up at time $\infty$, then the blow-up points must be the critical points of $f$.
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