Electronic Journal of Differential Equations, Vol. 2010(2010), No. 61, pp. 1-23. Title: Existence and concentration of positive solutions for a quasilinear elliptic equation in R. Author: Elisandra Gloss (Univ. Federal da Paraiba, Brazil) Abstract: We study the existence and concentration of positive solutions for the quasilinear elliptic equation $$ -\varepsilon^2u'' -\varepsilon^2(u^2)''u+V(x) u = h(u) $$ in $\mathbb{R}$ as $\varepsilon\to 0$, where the potential $V:\mathbb{R}\to \mathbb{R}$ has a positive infimum and $\inf_{\partial \Omega}V>\inf_{ \Omega}V$ for some bounded domain $\Omega$ in $\mathbb{R}$, and $h$ is a nonlinearity without having growth conditions such as Ambrosetti-Rabinowitz. Submitted January 16, 2010. Published May 05, 2010. Math Subject Classifications: 35J20, 35J62. Key Words: Schrodinger equation; quasilinear equation; concentration; variational methods.