Time-Dependent Density-Functional Theory for Superfluids

Details Time-Dependent Density-Functional Theory for Superfluids Time-Dependent Density-Functional Theory for Superfluids

2000-12-11

arxiv.org/abs/cond-mat/0012172v1

Physics

Condensed Matter

Statistical Mechanics

12 pages. Europhysics Letters, in press

Scientific paper

10.1209/epl/i2001-00131-8

A density-functional theory is established for inhomogeneous superfluids at finite temperature, subject to time-dependent external fields in isothermal conditions. After outlining parallelisms between a neutral superfluid and a charged superconductor, Hohenberg-Kohn-Sham-type theorems are proved for gauge-invariant densities and a set of Bogolubov-Popov equations including exchange and correlation is set up. Earlier results applying in the linear response regime are recovered.

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