Behavior of the impurity atom in a weakly-interacting Bose gas

dc.contributor.author	Panochko, G.
dc.contributor.author	Pastukhov, V.
dc.contributor.author	Vakarchuk, I.
dc.date.accessioned	2019-06-19T12:09:16Z
dc.date.available	2019-06-19T12:09:16Z
dc.date.issued	2017
dc.identifier.citation	Behavior of the impurity atom in a weakly-interacting Bose gas / G. Panochko, V. Pastukhov, I. Vakarchuk // Condensed Matter Physics. — 2017. — Т. 20, № 1. — С. 13604: 1–11 . — Бібліогр.: 19 назв. — англ.	uk_UA
dc.identifier.isbn	arXiv:1703.10390
dc.identifier.issn	1607-324X
dc.identifier.other	PACS: 67.60.Bc, 03.75.Hh
dc.identifier.other	DOI:10.5488/CMP.20.13604
dc.identifier.other	arXiv:1703.10390
dc.identifier.uri	http://dspace.nbuv.gov.ua/handle/123456789/156974
dc.description.abstract	We studied the properties of a single impurity atom immersed in a dilute Bose condensate at low temperatures. In particular, we perturbatively obtained the momentum dependence of the impurity spectrum and damping. By means of the Brillouin-Wigner perturbation theory we also calculated the self-energy both for attractive and repulsive polaron in the long-wavelength limit. The stability problem of the impurity atom in a weakly-interacting Bose gas is also examined.	uk_UA
dc.description.abstract	В роботi вивчено поведiнку домiшкового атома у розрiдженому бозе-конденсатi в границi низьких температур. Отримано пертурбативним методом спектр домiшки та його загасання в залежностi вiд iмпульсу. В рамках теорiї збурень Брiлюена–Вiгнера знайдено власну енергiю притягального та вiдштовхувального полярона в довгохвильовiй границi. Також вивчено питання стабiльностi полярона в слабковзаємодiючому бозе-газi.	uk_UA
dc.description.sponsorship	This work was partly supported by Project FF-30F (No. 0116U001539) from the Ministry of Education and Science of Ukraine. The authors appreciate the help of Dr. Mykola Stetsko in the preparation of this article. One of the authors (I. Vakarchuk) expresses satisfaction with the fact that he was invited to participate in the publication of articles in honor of Yu. Holovatch. He has been one of my first students (since his schooldays), who defended his thesis on phase transitions, and is engaged now in the research of complex systems of non-physical nature using methods of statistical physics. I wish him new successes in this extremely interesting area of human activity	uk_UA
dc.language.iso	en	uk_UA
dc.publisher	Інститут фізики конденсованих систем НАН України	uk_UA
dc.relation.ispartof	Condensed Matter Physics
dc.title	Behavior of the impurity atom in a weakly-interacting Bose gas	uk_UA
dc.title.alternative	Поведiнка домiшкового атома в слабковзаємодiючому бозе-газi	uk_UA
dc.type	Article	uk_UA
dc.status	published earlier	uk_UA