%0 Journal Article %T Boltzmann Equation with a Large Potential in a Periodic Box %A Chanwoo Kim %J Mathematics %D 2011 %I arXiv %X The stability of the Maxwellian of the Boltzmann equation with a large amplitude external potential $\Phi$ has been an important open problem. In this paper, we resolve this problem with a large $C3-$potential in a periodic box $\mathbb{T}^d$, $d \geq 3$. We use [1] in $L^p-L^{\infty}$ framework to establish the well-posedness and the $L^{\infty}-$stability of the Maxwellian $\mu_E(x,v)=\exp\{-\frac{|v|^2}{2}-\Phi(x)\}$. %U http://arxiv.org/abs/1102.4002v1