Microscopic theory of heat capacity of liquid helium-4 for temperatures above the critical point

In this paper, with the corresponding formula for internal energy obtained in Ref. [J. Phys. Stud. {\bf 11}, 259 (2007)], combined with a simple calculation of the effective mass of interacting Bose particles, the behavior of the heat capacity of liquid $^4$He is analyzed numerically for the entire temperature range. The results agree quite well with experimental data.
Comment: 15 pages, 2 figures