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arXiv 0708.0286math.AP
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临界指数薛定谔系统正束缚态的唯一性

Uniqueness of positive bound states to Schrodinger systems with critical exponents

Congming Li, Li Ma

摘要:

我们证明了以下椭圆系统正解的唯一性:\begin{eqnarray*} \left\{\begin{array}{ll} - \lap (u(x)) = u(x)^αv(x)^β - \lap (v(x)) = u(x)^β v(x)^α \end{array} \right. \end{eqnarray*}这里是$x\in R^n$、$n\geq 3$和带有$α+β=\frac{n+2}{n-2}$的$1\leq α, β\leq \frac{n+2}{n-2}$。在$n=3$和$α=2, β=3$的特殊情况下,系统来自具有玻色-爱因斯坦凝聚临界指数的定态薛定谔系统。作为关键的一步,我们证明了上述具有临界指数的椭圆型方程组的正解的径向对称性。

英文摘要:

We prove the uniqueness for the positive solutions of the following elliptic systems: \begin{eqnarray*} \left\{\begin{array}{ll} - \lap (u(x)) = u(x)^αv(x)^β - \lap (v(x)) = u(x)^β v(x)^α \end{array} \right. \end{eqnarray*} Here $x\in R^n$, $n\geq 3$, and $1\leq α, β\leq \frac{n+2}{n-2}$ with $α+β=\frac{n+2}{n-2}$. In the special case when $n=3$ and $α=2, β=3$, the systems come from the stationary Schrodinger system with critical exponents for Bose-Einstein condensate. As a key step, we prove the radial symmetry of the positive solutions to the elliptic system above with critical exponents.

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