Collisional-inhomogeneity-induced generation of matter-wave dark solitons
Abstract
We propose an experimentally relevant protocol for the controlled generation of matter-wave dark solitons in atomic Bose-Einstein condensates (BECs). In particular, using direct numerical simulations, we show that by switching-on a spatially inhomogeneous (step-like) change of the s-wave scattering length, it is possible to generate a controllable number of dark solitons in a quasi-one-dimensional BEC. A similar phenomenology is also found in the two-dimensional setting of "disk-shaped" BECs but, as the solitons are subject to the snaking instability, they decay into vortex structures. A detailed investigation of how the parameters involved affect the emergence and evolution of solitons and vortices is provided.
Keywords
Cite
@article{arxiv.1007.2638,
title = {Collisional-inhomogeneity-induced generation of matter-wave dark solitons},
author = {C. Wang and P. G. Kevrekidis and T. P. Horikis and D. J. Frantzeskakis},
journal= {arXiv preprint arXiv:1007.2638},
year = {2015}
}
Comments
8 pages, 5 Figures, Physics Letters A (in press)