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Current-density functional theory of time-dependent linear response in quantal fluids: recent progress | M. P. Tosi
; M. L. Chiofalo
; A. Minguzzi
; R. Nifosi`
; | Rating: | Visitors: 5/5 (1 visitor) | Date: |
4 Jul 1998 | Journal: | contribution to "New Approaches to Problems in Liquid State Theory", eds. C. Caccamo et al., (1999, Kluwer Academics, The Netherlands), p.491-592 | Subject: | Statistical Mechanics | cond-mat.stat-mech | Affiliation: | Scuola Normale Superiore, Pisa | Abstract: | Vignale and Kohn have recently formulated a local density approximation to the time-dependent linear response of an inhomogeneous electron system in terms of a vector potential for exchange and correlation. The vector potential depends on the induced current density through spectral kernels to be evaluated on the homogeneous electron-gas. After a brief review of their theory, the case of inhomogeneous Bose superfluids is considered, with main focus on dynamic Kohn-Sham equations for the condensate in the linear response regime and on quantal generalized hydrodynamic equations in the weak inhomogeneity limit. We also present the results of calculations of the exchange-correlation spectra in both electron and superfluid boson systems. | Source: | arXiv, cond-mat/9807065 | Services: | Forum | Review | PDF | Favorites |
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