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A Perturbative Analysis of Modulated Amplitude Waves in Bose-Einstein Condensates

Mason A. Porter, Predrag Cvitanovic'

nlin.CDarXiv:nlin/0308024

Abstract

We apply Lindstedt's method and multiple scale perturbation theory to analyze spatio-temporal structures in nonlinear Schrödinger equations and thereby study the dynamics of quasi-one-dimensional Bose-Einstein condensates with mean-field interactions. We determine the dependence of the intensity of modulated amplitude waves on their wave number. We also explore the band structure of Bose-Einstein condensates in detail using Hamiltonian perturbation theory and supporting numerical simulations.

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