%0 Journal Article %T Destruction of invariant circles for Gevrey area-preserving twist maps %A Lin Wang %J Mathematics %D 2014 %I arXiv %X In this paper, we show that for exact area-preserving twist maps on annulus, the invariant circles with a given rotation number can be destroyed by arbitrarily small Gevrey-$\alpha$ perturbations of the integrable generating function in the $C^r$ topology with $r<4-\frac{2}{\alpha}$, where $\alpha>1$. %U http://arxiv.org/abs/1403.0986v1