DOI: https://doi.org/10.30970/jps.12.3002
BOSE-CONDENSATE IN TWO-COMPONENT BOSE-LIQUID
I. O. Vakarchuk, V. S. Pastukhov
Department for Theoretical Physics, Ivan Franko National University of Lviv,
12 Drahomanov St., Lviv, UA-79005, Ukraine
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Journal of Physical Studies 12(3), Article 3002 [8 pages] (2008)
DOI: https://doi.org/10.30970/jps.12.3002 BOSE-CONDENSATE IN TWO-COMPONENT BOSE-LIQUIDI. O. Vakarchuk, V. S. Pastukhov
Department for Theoretical Physics, Ivan Franko National University of Lviv, |
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The explicit expressions for reduced $s$-particle density matrices are evaluated using the density matrix of a two-component Bose-liquid calculated earlier [I. O. Vakarchuk, V. S. Pastukhov, J. Phys. Stud. {\bf 12}, 1001 (2008)]. The impurity influence on the Bose-Einstein condensation phenomenon in liquid helium is studied. Temperature dependence of condensation fraction for a mixture with $^4$He-$^6$He parameters at different concentrations is carried out numerically using liquid helium-4 structure factor measurements.
PACS number(s): 03.77.Mn, 67.55.Lf