Zobrazeno 1 - 10
of 23
pro vyhledávání: '"G. Panochko"'
Publikováno v:
Condensed Matter Physics, Vol 20, Iss 1, p 13604 (2017)
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 per
Externí odkaz:
https://doaj.org/article/76a20ddf0a0e4766aa8c5a81f7efa711
By using simple and efficient method we discuss properties of a single impurity immersed in three-dimensional Bose gas with the interaction between particles tuned to unitary limit. Particularly, adopting the mean-field-like approximation we present
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bba30cd71fef2e51e86cc0f1af701add
http://arxiv.org/abs/2006.06188
http://arxiv.org/abs/2006.06188
The detailed mean-field treatment of the Bose polaron problem in two and three dimensions is presented. Particularly, assuming that impurity is immersed in the dilute Bose gas and interacts with bosons via the hard-sphere two-body potential, we calcu
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::b48267fb7e5151adc5dfd24157ab2f9d
http://arxiv.org/abs/2001.03220
http://arxiv.org/abs/2001.03220
Autor:
G. Panochko, Ivan Vakarchuk
Publikováno v:
Ukrainian Journal of Physics. 62:123-131
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::2b126e4bd701699f757910c69fe0d54e
https://doi.org/10.15407/ujpe62.02.0123
https://doi.org/10.15407/ujpe62.02.0123
Autor:
Volodymyr Pastukhov, G. Panochko
The full momentum dependence of spectrum of a point-like impurity immersed in a dilute one-dimensional Bose gas is calculated on the mean-field level. In particular we elaborate, to the finite-momentum Bose polaron, the path-integral approach whose s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::24c0c1c76cca9b8a8789841d842140b1
http://arxiv.org/abs/1903.05953
http://arxiv.org/abs/1903.05953
Autor:
Volodymyr Pastukhov, G. Panochko
We exactly calculate the full temperature dependence of Casimir-like forces appearing between two and three static impurities loaded in the ideal Bose gas below the Bose-Einstein condensation transition point. Assuming the short-ranged character of t
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1230f45acf068ff24dc5bade1223d7f6
Publikováno v:
International Journal of Modern Physics B. 32:1850053
We proposed the non-perturbative scheme for calculation of the impurity spectrum in the Bose system at zero temperature. The method is based on the path-integral formulation and describes an impurity as a zero-density ideal Fermi gas interacting with
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::0713dd0e6fb06ef5792e9d232850cbf7
https://doi.org/10.1142/s0217979218500534
https://doi.org/10.1142/s0217979218500534
Autor:
G. Panochko, Ivan Vakarchuk
Publikováno v:
Condensed Matter Physics, Vol 18, Iss 3, p 33002 (2015)
We propose to consider nonlinear fluctuations in the theory of liquid ⁴He deforming the commutation relations between the generalized coordinates and momenta. The generalized coordinates are the coefficients of the density fluctuations of the Bose
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a986c2b1c5aee28d65b2daa1b4ea9317
http://dspace.nbuv.gov.ua/handle/123456789/153552
http://dspace.nbuv.gov.ua/handle/123456789/153552
Autor:
G. Panochko, Ivan Vakarchuk
Publikováno v:
Scopus-Elsevier
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c95a53425587392c6cf1397fcd9688bd
https://doi.org/10.30970/jps.16.4601
https://doi.org/10.30970/jps.16.4601
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