Helium-4 Energy and Specific Heat in Superfluid and Normal Phase

Details Helium-4 Energy and Specific Heat in Superfluid and Normal Phase Helium-4 Energy and Specific Heat in Superfluid and Normal Phase

2002-04-11

arxiv.org/abs/cond-mat/0204240v1

Journal of Physical Studies (Lviv) 6, No. 3, 298-304 (2002)

Physics

Condensed Matter

Statistical Mechanics

10 pages, 2 figures

Scientific paper

The calculation of the He4 energy and specific heat is carried out in a wide temperature range within the two-time temperature Green functions approach. The approximation improving the random phase approximation is developed providing the correct behaviour of the calculated specific heat at the temperatures $0 < T/T_c < 0.65$ and $T/T_c> 1.32$ where $T_c$ stands for the phase transition point.

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