Spectral Gaps of Spin-orbit Coupled Particles in Deformed Traps
Abstract
We consider a spin-orbit coupled system of particles in an external trap that is represented by a deformed harmonic oscillator potential. The spin-orbit interaction is a Rashba interaction that does not commute with the trapping potential and requires a full numerical treatment in order to obtain the spectrum. The effect of a Zeeman term is also considered. Our results demonstrate that variable spectral gaps occur as a function of strength of the Rashba interaction and deformation of the harmonic trapping potential. The single-particle density of states and the critical strength for superfluidity vary tremendously with the interaction parameter. The strong variations with Rashba coupling and deformation implies that the few- and many-body physics of spin-orbit coupled systems can be manipulated by variation of these parameters.
Keywords
Cite
@article{arxiv.1212.4051,
title = {Spectral Gaps of Spin-orbit Coupled Particles in Deformed Traps},
author = {O. V. Marchukov and A. G. Volosniev and D. V. Fedorov and A. S. Jensen and N. T. Zinner},
journal= {arXiv preprint arXiv:1212.4051},
year = {2013}
}
Comments
18 pages, 6 figures, published version