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Natural orbitals for the equation of motion phonon method
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SYSNO ASEP 0525377 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Natural orbitals for the equation of motion phonon method Author(s) Veselý, Petr (UJF-V) ORCID, SAI
De Gregorio, G. (IT)
Knapp, F. (CZ)
Lo Iudice, N. (IT)
Pokorný, J. (CZ)Number of authors 5 Source Title Acta physica Polonica. B. - : Jagellonian University - ISSN 0587-4254
Roč. 51, č. 3 (2020), s. 623-630Number of pages 8 s. Publication form Print - P Action XXXVI. Mazurian Lakes Conference on Physics Event date 01.09.2019 - 07.09.2019 VEvent location Piaski Country PL - Poland Event type EUR Language eng - English Country PL - Poland Keywords equations of state ; equations of motion ; ground-state Subject RIV BE - Theoretical Physics OECD category Atomic, molecular and chemical physics (physics of atoms and molecules including collision, interaction with radiation, magnetic resonances, Mössbauer effect) R&D Projects GA19-14048S GA ČR - Czech Science Foundation (CSF) Method of publishing Open access Institutional support UJF-V - RVO:61389005 UT WOS 000521823800011 EID SCOPUS 85085161352 DOI 10.5506/APhysPolB.51.623 Annotation We discuss the use of natural orbitals as single-particle basis states for the Equation of Motion Phonon Method (EMPM). They are obtained by computing a ground-state one-body density matrix in second-order manybody perturbation theory. We focus our attention on energy and proton point radius of 16O and show that, with respect to Hartree-Fock, the new basis improves drastically the convergence of the two-phonon correlation energy. Workplace Nuclear Physics Institute Contact Markéta Sommerová, sommerova@ujf.cas.cz, Tel.: 266 173 228 Year of Publishing 2021 Electronic address https://doi.org/10.5506/APhysPolB.51.623
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