Exotic quantum states in two dimensions -- Rotating Bose condensates and quantum Hall liquids
Thursday 27 November 2008
to 16:15 at
Susanne Viefers (Oslo)
Low-dimensional systems, i.e. physical systems where particles live in two (or even one)
space dimension, exhibit exotic quantum phenonema not occurring in the three-dimensional
world. The perhaps most prominent example is the possibility of anyons, particles which
are neither bosons nor fermions.
Thanks to modern experimental techniques, such low-dimensional systems can be realized in
the lab, often in materials which are relevant for nanotechnological applications. Thus,
a theoretical understanding of these quantum phenonema is of interest both from the
fundamental point of view and as basic knowledge for nanotechnology.
The examples I will focus on in this talk are the quantum Hall effect (occurring in a 2D
electron system at strong magnetic fields) and closely related phenonema expected to
occur in rapidly rotating atomic Bose condensates.