Regensburg 2004 – wissenschaftliches Programm

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TT: Tiefe Temperaturen

TT 4: Quantenflüssigkeiten, Bose-Einstein Kondensate, ultrakalte Atome, ...

TT 4.6: Vortrag

Montag, 8. März 2004, 11:30–11:45, H19

Reflectionless dynamics of 1D charge and spin modes in atomic traps — •Lars Kecke, Wolfgang Häusler, and Hermann Grabert — Physikalisches Institut, Albert- Ludwigs Univerität, Freiburg

Gases of Fermionic atoms in cigar shaped, one-dimensional traps provide an ideal means to study the dynamics of correlated Fermi systems in the Tonks gas limit of repulsive contact interactions. The interaction strength can be tuned experimentally [1].

Based on the Tomonaga-Luttinger (TL) model we present calculations on the dynamics of charge and spin density waves. Particularly at the edge both modes show features that are strikingly different from the non-interacting case as well as from conventional TL dynamics. For example we find a suppression of reflections that should be experimentally observable.

[1] T. Loftus et al PRL 88, 173201 (2002)