Low Temperature Physics: 45, 1059 (2019); https://doi.org/10.1063/1.5125904
Fizika Nizkikh Temperatur: Volume 45, Number 10 (October 2019), p. 1242-1248    ( to contents , go back )

Modification of exponents in the Ginzburg–Sobyanin theory of superfluidity

Yu.M. Poluektov

National Science Center, Kharkov Institute of Physics and Technology 1 Akademicheskaya Str., Kharkiv 61108, Ukraine
E-mail: yuripoluektov@kipt.kharkov.ua

Received March 5, 2019, published online August 27, 2019

Abstract

A modification of the temperature dependencies in the Ginzburg–Sobyanin theory of superfluidity is proposed, which allows one to obtain critical index values that are consistent with the general correlations of the fluctuation theory of phase transitions and modern experimental and calculated data.

Key words: superfluidity, heat capacity, order parameter, critical indices, phase transition temperature, fluctuations.

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