Transport of Bose-Einstein condensates through two dimensional cavities

The recent experimental advances in manipulating ultra-cold atoms make it feasible to study coherent transport of Bose-Einstein condensates (BEC) through various mesoscopic structures. In this work the quasi-stationary propagation of BEC matter waves through two dimensional cavities is investigated using numerical simulations within the mean-field approach of the Gross-Pitaevskii equation.

The focus is on the interplay between interference effects and the interaction term in the non-linear wave equation. One sees that the transport properties show a complicated behaviour with multi-stability, hysteresis and dynamical instabilities for non-vanishing interaction. Furthermore, the prominent weak localization effect, which is a robust interference effect emerging after taking a configuration average, is reduced and partially inverted for non-vanishing interaction.

Produktdetails

• Autoren: Timo Hartmann
• Verlag: Universitätsverlag Regensburg
• Sprache: Englisch
• Produktform: Taschenbuch
• Erschienen: 01.03.2015
• EAN: 9783868451191
• ISBN: 978-3-86845-119-1
• Seiten: 226
• Abmessung: 170 mm x 240 mm x 13 mm
• Gewicht: 560 g
• Illustration: m 5 SW- u. 125 farb. Abb.
• Serie: Dissertationsreihe Physik
• Thema: Naturwissenschaften, Medizin, Informatik, Technik > Physik, Astronomie > Theoretische Physik