Dispersion in second sound and anomalous heat conduction at the lambda point of liquid helium

R. A. Ferrell, N. Menyhárd, H. Schmidt, F. Schwabl, P. Szépfalusy

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Abstract

The absence of a characteristic length at the lambda temperature Tλ of liquid helium is used to determine the wave-number dependence of the phase fluctuations and the second-sound dispersion relation ω=ak32 where ω and k→ are the frequency and wave number and â0.1Âcm32 sec-1. Further predictions are |T-Tλ|-13 singular temperature variation for second-sound damping (T<Tλ) and the thermal conductivity (T>Tλ).

Original languageEnglish
Pages (from-to)891-894
Number of pages4
JournalPhysical review letters
Volume18
Issue number21
DOIs
Publication statusPublished - Dec 1 1967

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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