T>0 ensemble state density functional theory revisited

Helmut Eschrig

doi:10.1103/physrevb.82.205120

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arXiv · 1002.4267

T>0 ensemble state density functional theory revisited

Helmut Eschrig

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Abstract

A logical foundation of equilibrium state density functional theory in a Kohn-Sham type formulation is presented on the basis of Mermin's treatment of the grand canonical state. it is simpler and more satisfactory compared to the usual derivation of ground state theory, and free of remaining open points of the latter. It may in particular be relevant with respect to cases of spontaneous symmetry breaking like non-collinear magnetism and orbital order.

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Helmut Eschrig. 2010-02-23. T>0 ensemble state density functional theory revisited. https://doi.org/10.1103/physrevb.82.205120

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