Phenomenological Theory on Critical Phenomena in Liquid Helium. I
Open Access
- 1 January 1971
- journal article
- Published by Oxford University Press (OUP) in Progress of Theoretical Physics
- Vol. 45 (1) , 25-35
- https://doi.org/10.1143/PTP.45.25
Abstract
Critical phenomena on liquid helium are discussed on the basis of the phenomenological theory of Usui and Yamauchi, considering the order-parameter fluctuations. The thermal conductivity has the critical exponent 1/3 and its absolute value is as small as tenth of the experimental data. On the sound attenuation, the short time behavior is shown to be important and a tentative equation is proposed, which gives the critical exponent 1/2 in the hydrodynamical region above the λ-point and 0 in the critical region, in accordance with the experiment by Heinicke et al.Keywords
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