|
Journal of Physical Studies 13(2), Article 2003 [5 pages] (2009)
DOI: https://doi.org/10.30970/jps.13.2003 TEMPERATURE DEPENDENCE OF THE PAIR DISTRIBUTION FUNCTION OF THE LIQUID 4HeR. O. Prytula, I. O. Vakarchuk
Department for Theoretical Physics, Ivan Franko National University of Lviv, |
 |
The expression for the pair structure factor of the Bose-liquid in a wide temperature range is used in the approximation of three- and four-particle indirect correlations [I. O. Vakarchuk, R. O. Prytula J. Phys. Stud. {\bf 12}, 4001 (2008)]. We obtained the expressions for the pair distribution function and direct correlation function of the liquid helium-4. All the final formulae are written solely via the liquid structure factor extrapolated to $T\to 0$ taken as a source information instead of the interatomic potential. We make numerical calculation for the temperature dependence of the pair distribution function and the direct correlation function. A good agreement of the temperature dependence of the pair distribution function with the corresponding experimental data is found.
PACS number(s): 05.30.Jp, 67.20.+k, 67.25.bd, 67.40.-w, 67.40.Db, 67.40.Kh