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FLEIM: A stable, accurate and robust extrapolation method at infinity for computing the ground state of electronic Hamiltonians

Abstract : The Kohn-Sham method uses a single model system, and corrects it by a density functional the exact user friendly expression of which is not known and is replaced by an approximated, usable, model. We propose to use instead more than one model system, and use a greedy extrapolation method to correct the results of the model systems. Evidently, there is a higher price to pay for it. However, there are also gains: within the same paradigm, e.g., excited states and physical properties can be obtained.
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Preprints, Working Papers, ...
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https://hal.archives-ouvertes.fr/hal-03503612
Contributor : Étienne Polack Connect in order to contact the contributor
Submitted on : Tuesday, December 28, 2021 - 9:02:35 AM
Last modification on : Thursday, November 10, 2022 - 4:37:01 AM

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  • HAL Id : hal-03503612, version 1
  • ARXIV : 2112.13139

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Etienne Polack, Yvon Maday, Andreas Savin. FLEIM: A stable, accurate and robust extrapolation method at infinity for computing the ground state of electronic Hamiltonians. {date}. ⟨hal-03503612⟩

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