23 citations · 105 across the 30 of their papers we have counts for
4 papers · 1 filter
First sound velocity in liquid He
O. I. Hryhorchak
Based on the many-boson system structure factor, which takes into account three- and four-particle direct correlations, there was found the first sound velocity temperature behavio…
Internal energy of many-boson system with three- and four-particle direct correlations taken into account
Ivan Vakarchuk, Orest Hryhorchak
In this paper we calculate kinetic, potential and full energy with three- and four-particle direct correlations taken into account at wide temperature region on the base of the den…
Structure functions of many-boson system with regard for direct three- and four-particle correlations
Ivan Vakarchuk, Orest Hryhorchak
On the basis of the expression for the density matrix of interacting Bose particles in the coordinate representation with regard for the direct three- and four-particle correlation…
Effective mass of He atom in superfluid and normal phases
Ivan Vakarchuk, Orest Hryhorchak, Volodymyr Pastukhov +1
The formula for the temperature dependence of the effective mass of a He atom in the superfluid and normal phases is obtained.\,\,This expression for the effective mass all…