Hohenberg-Kohn theorem for the lowest-energy resonance of unbound systems

Abstract

We show that under well-defined conditions the Hohenberg-Kohn theorem (HKT) can be extended to the lowest-energy resonance of unbound systems. Using the Gel'fand Levitan theorem, the extended version of the HKT can also be applied to systems that support a finite number of bound states. The extended version of the HKT provides an adequate framework to carry out DFT calculations of negative electron affinities.

4 pages, 3 figures

References in corpus (1)

• Calculations of time-dependent observables in non-Hermitian quantum mechanics: The problem and a possible solution

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