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Title: Bright and dark solitons in a Bose-Einstein condensate
Author: Malo Roset, Laura
Director/Tutor: Juliá-Díaz, Bruno
Keywords: Solitons
Condensació de Bose-Einstein
Treballs de fi de grau
Bose-Einstein condensation
Bachelor's thesis
Issue Date: Jan-2018
Abstract: We study dark and bright solitons in confined Bose-Einstein condensates of ultracold gases with repulsive and attractive atom-atom interaction. First, we compute analytic properties of the solitons in absence of the trap. Then, we consider the problem of the collision of a bright soliton with a barrier. This is studied by solving numerically the 1D Gross-Pitaevskii equation in the presence of a harmonic oscillator potential and a Rosen-Morse barrier. We discuss in detail the conditions for having a transmission coefficient of T = 0:5. Then, we study the evolution of the energies during this process and the nature of the part transmitted
Note: Treballs Finals de Grau de Física, Facultat de Física, Universitat de Barcelona, Curs: 2018, Tutor: Bruno Julià Díaz
Appears in Collections:Treballs Finals de Grau (TFG) - Física

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