Effective mass of atom and the excitation spectrum in liquid helium-4 at T = 0 K
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...
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| Published in: | Физика низких температур |
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| Date: | 2003 |
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| Format: | Article |
| Language: | English |
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Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України
2003
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| Online Access: | https://nasplib.isofts.kiev.ua/handle/123456789/128787 |
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| Journal Title: | Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| Cite this: | 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. |
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Rovenchak, A.A. 2018-01-13T20:07:08Z 2018-01-13T20:07:08Z 2003 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. 0132-6414 PACS: 67.40.-w, 67.40.Db https://nasplib.isofts.kiev.ua/handle/123456789/128787 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. The author is grateful to Prof. I. Vakarchuk for valuable discussions on the problem considered in this work. en Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України Физика низких температур Квантовые жидкости и квантовые кpисталлы Effective mass of atom and the excitation spectrum in liquid helium-4 at T = 0 K Article published earlier |
| institution |
Digital Library of Periodicals of National Academy of Sciences of Ukraine |
| collection |
DSpace DC |
| title |
Effective mass of atom and the excitation spectrum in liquid helium-4 at T = 0 K |
| spellingShingle |
Effective mass of atom and the excitation spectrum in liquid helium-4 at T = 0 K Rovenchak, A.A. Квантовые жидкости и квантовые кpисталлы |
| title_short |
Effective mass of atom and the excitation spectrum in liquid helium-4 at T = 0 K |
| title_full |
Effective mass of atom and the excitation spectrum in liquid helium-4 at T = 0 K |
| title_fullStr |
Effective mass of atom and the excitation spectrum in liquid helium-4 at T = 0 K |
| title_full_unstemmed |
Effective mass of atom and the excitation spectrum in liquid helium-4 at T = 0 K |
| title_sort |
effective mass of atom and the excitation spectrum in liquid helium-4 at t = 0 k |
| author |
Rovenchak, A.A. |
| author_facet |
Rovenchak, A.A. |
| topic |
Квантовые жидкости и квантовые кpисталлы |
| topic_facet |
Квантовые жидкости и квантовые кpисталлы |
| publishDate |
2003 |
| language |
English |
| container_title |
Физика низких температур |
| publisher |
Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України |
| format |
Article |
| description |
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.
|
| issn |
0132-6414 |
| url |
https://nasplib.isofts.kiev.ua/handle/123456789/128787 |
| citation_txt |
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. |
| work_keys_str_mv |
AT rovenchakaa effectivemassofatomandtheexcitationspectruminliquidhelium4att0k |
| first_indexed |
2025-12-07T18:03:04Z |
| last_indexed |
2025-12-07T18:03:04Z |
| _version_ |
1850873567963512832 |