Please use this identifier to cite or link to this item:
Title: Directed Transport in BOSE-EINSTEIN Condensates
Keywords: BEC ratchet transport soliton driven systems
Issue Date: 27-Aug-2009
Citation: DARIO POLETTI (2009-08-27). Directed Transport in BOSE-EINSTEIN Condensates. ScholarBank@NUS Repository.
Abstract: The thesis deals with the phenomenon of directed transport in Bose-Einstein condensates (BECs). At first an explanation of what a BEC is and what directed transport means is provided while motivating the interest of the work. Two different experimental set-ups for the confinement of a BEC have been considered: (i) a quasi-1D torus-like trap and a quasi 1-D cigar-like trap. Also two experimentally feasible different kind of external asymmetric driving potential have been analyzed: (i) kicked potentials and (ii) smoothly time-changing driving potentials. In the first part a model in which a non-interacting BEC presents a, classically unexpected, directed acceleration is studied. In the following it is shown, in two different models, how directed currents can emerge as a result of atom-atom interaction in the BEC. Last we have shown how BEC solitons respond to an asymmetric, directed current generating, driving potential.
Appears in Collections:Ph.D Theses (Open)

Show full item record
Files in This Item:
File Description SizeFormatAccess SettingsVersion 
PolettiD.PDF4.39 MBAdobe PDF



Page view(s)

checked on Nov 10, 2018


checked on Nov 10, 2018

Google ScholarTM


Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.