Effects of interaction and polarization on spin-charge separation: A time-dependent spin-density-functional theory study
Strongly Correlated Electrons
2015-05-27 v1 Quantum Gases
Abstract
We calculate the nonequilibrium dynamic evolution of a one-dimensional system of two-component fermionic atoms after a strong local quench by using a time-dependent spin-density-functional theory. The interaction quench is also considered to see its influence on the spin-charge separation. It is shown that the charge velocity is larger than the spin velocity for the system of on-site repulsive interaction (Luttinger liquid), and vise versa for the system of on-site attractive interaction (Luther-Emery liquid). We find that both the interaction quench and polarization suppress the spin-charge separation.
Cite
@article{arxiv.1101.3373,
title = {Effects of interaction and polarization on spin-charge separation: A time-dependent spin-density-functional theory study},
author = {Gao Xianlong},
journal= {arXiv preprint arXiv:1101.3373},
year = {2015}
}
Comments
8 pages, 9 figures