Sub-Diffractive Band-Edge Solitons in Bose-Einstein Condensates in Periodic Potentials
Other Condensed Matter
2009-11-11 v1
Abstract
A new type of matter wave diffraction management is presented that leads to sub-diffractive soliton-like structures. The proposed management technique uses two counter-moving, identical periodic potentials (e.g. optical lattices). For suitable lattice parameters a novel type of atomic band-gap structure appears in which the effective atomic mass becomes infinite at the lowest edge of an energy band. This way normal matter-wave diffraction (proportional to the square of the atomic momentum) is replaced by fourth-order diffraction, and hence the evolution of the system becomes sub-diffractive.
Keywords
Cite
@article{arxiv.cond-mat/0510478,
title = {Sub-Diffractive Band-Edge Solitons in Bose-Einstein Condensates in Periodic Potentials},
author = {Kestutis Staliunas and Ramon Herrero and German J. de Valcarcel},
journal= {arXiv preprint arXiv:cond-mat/0510478},
year = {2009}
}