Quantum localization and bound state formation in Bose-Einstein condensates
Quantum Gases
2010-12-17 v2 Atomic Physics
Quantum Physics
Abstract
We discuss the possibility of exponential quantum localization in systems of ultracold bosonic atoms with repulsive interactions in open optical lattices without disorder. We show that exponential localization occurs in the maximally excited state of the lowest energy band. We establish the conditions under which the presence of the upper energy bands can be neglected, determine the successive stages and the quantum phase boundaries at which localization occurs, and discuss schemes to detect it experimentally by visibility measurements. The discussed mechanism is a particular type of quantum localization that is intuitively understood in terms of the interplay between nonlinearity and a bounded energy spectrum.
Cite
@article{arxiv.1007.2416,
title = {Quantum localization and bound state formation in Bose-Einstein condensates},
author = {Roberto Franzosi and Salvatore M. Giampaolo and Fabrizio Illuminati},
journal= {arXiv preprint arXiv:1007.2416},
year = {2010}
}
Comments
6 pages, 5 figures