Collective excitations in one-dimensional ultracold Fermi gases: a comparative study

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Time-dependent density-functional theory (TDDFT) is a powerful tool to study the non-equilibrium 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.
11 pages, 6 figures, submitted

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Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/173699

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/0805.4743
 http://arxiv.org/abs/0805.4743
 Phys. Rev. B 78, 195109 (2008)
 doi:10.1103/PhysRevB.78.195109

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arXiv