Collective excitations in one-dimensional ultracold Fermi gases: Comparative study

Article

关键词: DENSITY-FUNCTIONAL THEORY;    HUBBARD CHAIN;    SPIN;    CHARGE;    MODEL;    TEMPERATURE;    SEPARATION;    GAP;   

DOI  :  10.1103/PhysRevB.78.195109

来源: SCIE

【 摘 要 】

Time-dependent density-functional theory (TDDFT) is a powerful tool in studying the nonequilibrium dynamics of inhomogeneous interacting many-body systems. Here we show that the simple adiabatic local-spin-density approximation for the time-dependent exchange-correlation potential is surprisingly accurate in describing collective density and spin dynamics in strongly correlated one-dimensional ultracold Fermi gases. Our conclusions are based on extensive comparisons between our TDDFT results and accurate results based on the adaptive time-dependent density-matrix renormalization-group method.

【 授权许可】

Free