Natural orbital functional theory and pairing correlation effects in electron momentum density

dc.contributor.author	Barbiellini, В.
dc.date.accessioned	2017-06-07T03:41:43Z
dc.date.available	2017-06-07T03:41:43Z
dc.date.issued	2014
dc.identifier.citation	Natural orbital functional theory and pairing correlation effects in electron momentum density / B. Barbiellini // Физика низких температур. — 2014. — Т. 40, № 4. — С. 414-419. — Бібліогр.: 61 назв. — англ.	uk_UA
dc.identifier.issn	0132-6414
dc.identifier.other	PACS 71.10.–w, 71.15.–m, 74.72.–h, 71.10.Ca
dc.identifier.uri	http://dspace.nbuv.gov.ua/handle/123456789/119449
dc.description.abstract	Occupation numbers of natural orbitals capture the physics of strong electron correlations in momentum space. A natural orbital density functional theory based on the antisymmetrized geminal product provides these occupation numbers and the corresponding electron momentum density. A practical implementation of this theory approximates the natural orbitals by the Kohn–Sham orbitals and uses a mean-field approach to estimate pairing amplitudes leading to corrections for the independent particle model. The method is applied to weakly doped La₂CuO₄.	uk_UA
dc.description.sponsorship	This work is supported by the US Department of Energy, Office of Science, Basic Energy Sciences Contract No. DE-FG02–07ER46352. It has also benefited from Northeastern University's Advanced Scientific Computation Center (ASCC), theory support at the Advanced Light Source, Berkeley, and the allocation of computer time at NERSC through Grant No. DE-AC02–05CH11231.	uk_UA
dc.language.iso	en	uk_UA
dc.publisher	Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України	uk_UA
dc.relation.ispartof	Физика низких температур
dc.subject	Электронная структура и Ферми поверхность	uk_UA
dc.title	Natural orbital functional theory and pairing correlation effects in electron momentum density	uk_UA
dc.type	Article	uk_UA
dc.status	published earlier	uk_UA