2010/03/30 by Gao Xianlong
Chemistry · Physics and Astronomy · #Charge (physics) #Chemistry #Cold Atom Physics and Bose-Einstein Condensates #Condensed matter physics #Electron #Non-equilibrium thermodynamics #Physics #Physics of Superconductivity and Magnetism #Polarization (electrochemistry) #Quantum many-body systems #Quantum mechanics #Spin (aerodynamics) #Spin polarization #Thermodynamics #cond-mat.quant-gas #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.81.104306
published as Phys. Rev. B 81, 104306 (2010) · 8 pages, 9 figures
openalex publication_date 2010/03/30 · arxiv created 2011/01/18 · arxiv updated 2015/05/27 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
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.