Mesoscopic Aspects of Strongly Interacting Cold Atoms
Other Condensed Matter
2009-05-06 v2 Strongly Correlated Electrons
Superconductivity
Abstract
Harmonically trapped lattice bosons with strong repulsive interactions exhibit a superfluid-Mott-insulator heterostructure in the form of a "wedding cake". We discuss the mesoscopic aspects of such a system within a one-dimensional scattering matrix approach and calculate the scattering properties of quasi-particles at a superfluid-Mott-insulator interface as an elementary building block to describe transport phenomena across such a boundary. We apply the formalism to determine the heat conductivity through a Mott layer, a quantity relevant to describe thermalization processes in the optical lattice setup. We identify a critical hopping below which the heat conductivity is strongly suppressed.
Cite
@article{arxiv.0807.3173,
title = {Mesoscopic Aspects of Strongly Interacting Cold Atoms},
author = {Sebastian D. Huber and Gianni Blatter},
journal= {arXiv preprint arXiv:0807.3173},
year = {2009}
}
Comments
11 pages, 5 figures