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https://hdl.handle.net/2445/124538| 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 Solitons Bose-Einstein condensation Bachelor's theses |
| 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 |
| URI: | https://hdl.handle.net/2445/124538 |
| Appears in Collections: | Treballs Finals de Grau (TFG) - Física |
Files in This Item:
| File | Description | Size | Format | |
|---|---|---|---|---|
| Malo Roset Laura.pdf | 291.21 kB | Adobe PDF | View/Open |
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