Effective mass of atom and the excitation spectrum in liquid helium-4 at T = 0 K
| dc.contributor.author | Rovenchak, A.A. | |
| dc.date.accessioned | 2018-01-13T20:07:08Z | |
| dc.date.available | 2018-01-13T20:07:08Z | |
| dc.date.issued | 2003 | |
| dc.description.abstract | A self-consistent approach is applied for calculations within the two-time temperature Green function formalism in the random phase approximation for superfluid ⁴He. The effective mass of the ⁴He atom is computed asm m * =1.58 . The excitation spectrum is found to be in a satisfactory agreement with experiment. The sound velocity is calculated as 230 m/s. The Bose-condensation temperature with the effective mass taken into consideration is estimated as 1.99 K. | uk_UA |
| dc.description.sponsorship | The author is grateful to Prof. I. Vakarchuk for valuable discussions on the problem considered in this work. | uk_UA |
| dc.identifier.citation | Effective mass of atom and the excitation spectrum in liquid helium-4 at T = 0 K / A.A. Rovenchak // Физика низких температур. — 2003. — Т. 29, № 2. — С. 145-148. — Бібліогр.: 12. назв. — англ. | uk_UA |
| dc.identifier.issn | 0132-6414 | |
| dc.identifier.other | PACS: 67.40.-w, 67.40.Db | |
| dc.identifier.uri | https://nasplib.isofts.kiev.ua/handle/123456789/128787 | |
| 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.status | published earlier | uk_UA |
| dc.subject | Квантовые жидкости и квантовые кpисталлы | uk_UA |
| dc.title | Effective mass of atom and the excitation spectrum in liquid helium-4 at T = 0 K | uk_UA |
| dc.type | Article | uk_UA |
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