Mean-field dynamics to negative absolute temperatures in the Bose-Hubbard model
Quantum Gases
2013-04-12 v2
Abstract
We apply time-dependent Gutzwiller mean-field theory to provide a qualitative understanding for bosons in optical lattices that approach states corresponding to negative absolute temperatures. We perform the dynamical simulations to relate to the recent experiments by Braun et al. [ S. Braun, J. P. Ronzheimer, M. Schreiber, S. S. Hodgman, T. Rom, I. Bloch and U. Schneider, Science 339 52 (2013)]. Time-of-flight images calculated from the two-dimensional numerical simulations reproduce characteristics of the experimental observations, in particular, the emergence of the four peaks at the corners of the Brillouin zone.
Keywords
Cite
@article{arxiv.1211.4350,
title = {Mean-field dynamics to negative absolute temperatures in the Bose-Hubbard model},
author = {Akos Rapp},
journal= {arXiv preprint arXiv:1211.4350},
year = {2013}
}
Comments
content equivalent to published version, 10 pages, 10 figures