2021
DOI: 10.48550/arxiv.2107.14434
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Accurate Total Energies from the Adiabatic-Connection Fluctuation-Dissipation Theorem

Nick D. Woods,
Michael T. Entwistle,
Rex W. Godby

Abstract: In the context of inhomogeneous one-dimensional finite systems, recent numerical advances [Phys. Rev. B 103, 125155 (2021)] allow us to compute the exact coupling-constant dependent exchange-correlation kernel f λ xc (x, x , ω) within linear response time-dependent density functional theory. This permits an improved understanding of ground-state total energies derived from the adiabatic-connection fluctuation-dissipation theorem (ACFDT). We consider both 'one-shot' and 'self-consistent' ACFDT calculations, and… Show more

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