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.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	http://dspace.nbuv.gov.ua/handle/123456789/128787
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.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	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
dc.status	published earlier	uk_UA