31 citations · 289 across the 39 of their papers we have counts for
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Polaron in dilute 2D Bose gas at low temperatures
Volodymyr Pastukhov
The properties of a Bose polaron immersed in a dilute two-dimensional medium at finite temperatures are discussed. Assuming that the impurity is weakly-coupled to the bath particle…
Polaron in the dilute critical Bose condensate
Volodymyr Pastukhov
The properties of impurity immersed in the dilute -dimensional Bose gas at temperatures close to the second-order phase transition point are considered. Particularly by means of…
Impurity states in the one-dimensional Bose gas
Volodymyr Pastukhov
The detailed study of the low-energy spectrum for a mobile impurity in the one-dimensional bosonic enviroment is performed. Particularly we have considered only two analytically ac…
2D dilute Bose mixture at low temperatures
Pavlo Konietin, Volodymyr Pastukhov
The thermodynamic and superfluid properties of the dilute two-dimensional binary Bose mixture at low temperatures are discussed. We also considered the problem of the emergence of…
Impurity self-energy in the strongly-correlated Bose systems
Galyna Panochko, Volodymyr Pastukhov, Ivan Vakarchuk
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 de…
-expansion for the critical temperature of the Bose gas
Orest Hryhorchak, Volodymyr Pastukhov
We revised the large- expansion for a three-dimensional Bose system with short-range repulsion in normal phase. Particularly, for the model potential that is characterised only…
Behavior of the impurity atom in a weakly-interacting Bose gas
G. Panochko, V. Pastukhov, I. Vakarchuk
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 t…