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arXiv · 2407.20260

Geometrical Perspective on Spin-Lattice Density-Functional Theory

Markus Penz·Robert van Leeuwen
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Abstract

A recently developed viewpoint on the fundamentals of density-functional theory for finite interacting spin-lattice systems that centers around the notion of degeneracy regions is presented. It allows for an entirely geometrical description of the Hohenberg-Kohn theorem and v-representability. The phenomena receive exemplification by an Anderson impurity model and other small-lattice examples. The case of adiabatic change and the time-dependent setting are examined as well.

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Markus Penz, Robert van Leeuwen. 2024-07-24. Geometrical Perspective on Spin-Lattice Density-Functional Theory. https://doi.org/10.1063/5.0230494

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