%0 Report
%D 2007
%T Solutions to the nonlinear Schroedinger equation carrying momentum along a curve. Part I: study of the limit set and approximate solutions
%A Fethi Mahmoudi
%A Andrea Malchiodi
%A Marcelo Montenegro
%X We prove existence of a special class of solutions to the (elliptic) Nonlinear Schroeodinger Equation $- \\\\epsilon^2 \\\\Delta \\\\psi + V(x) \\\\psi = |\\\\psi|^{p-1} \\\\psi$, on a manifold or in the Euclidean space. Here V represents the potential, p an exponent greater than 1 and $\\\\epsilon$ a small parameter corresponding to the Planck constant. As $\\\\epsilon$ tends to zero (namely in the semiclassical limit) we prove existence of complex-valued solutions which concentrate along closed curves, and whose phase is highly oscillatory. Physically, these solutions carry quantum-mechanical momentum along the limit curves. In this first part we provide the characterization of the limit set, with natural stationarity and non-degeneracy conditions. We then construct an approximate solution up to order $\\\\epsilon^2$, showing that these conditions appear naturally in a Taylor expansion of the equation in powers of $\\\\epsilon$. Based on these, an existence result will be proved in the second part.
%G en_US
%U http://hdl.handle.net/1963/2112
%1 2577
%2 Mathematics
%3 Functional Analysis and Applications
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%0 Journal Article
%J Duke Math. J. 124 (2004) 105-143
%D 2004
%T Multidimensional boundary layers for a singularly perturbed Neumann problem
%A Andrea Malchiodi
%A Marcelo Montenegro
%B Duke Math. J. 124 (2004) 105-143
%I Duke University Press
%G en_US
%U http://hdl.handle.net/1963/2960
%1 1740
%2 Mathematics
%3 Functional Analysis and Applications
%$ Submitted by Andrea Wehrenfennig (andreaw@sissa.it) on 2008-09-22T08:57:55Z\\nNo. of bitstreams: 1\\nMalchiodiMontenegro03.pdf: 414971 bytes, checksum: a647d87b29bbf0808629d5647dfd1dad (MD5)
%R 10.1215/S0012-7094-04-12414-5