Uniqueness of positive bound states to Schrodinger systems with critical exponents

Details Uniqueness of positive bound states to Schrodinger systems with critical exponents Uniqueness of positive bound states to Schrodinger systems with critical exponents

2007-08-02

arxiv.org/abs/0708.0286v1

Mathematics

Analysis of PDEs

Scientific paper

We prove the uniqueness for the positive solutions of the following elliptic systems: \begin{eqnarray*} \left\{\begin{array}{ll} - \lap (u(x)) = u(x)^{\alpha}v(x)^{\beta} - \lap (v(x)) = u(x)^{\beta} v(x)^{\alpha} \end{array} \right. \end{eqnarray*} Here $x\in R^n$, $n\geq 3$, and $1\leq \alpha, \beta\leq \frac{n+2}{n-2}$ with $\alpha+\beta=\frac{n+2}{n-2}$. In the special case when $n=3$ and $\alpha =2, \beta=3$, 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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