11 citations · 20 across the 4 of their papers we have counts for
4 papers
Phase ordering at the lambda transition in liquid 4-He
Torsten Fliessbach
A modified ideal Bose gas model is proposed as an approach for liquid helium at the lambda point. The decisive modification of the ideal Bose gas model is the use of phase ordered…
Asymptotic temperature dependence of the superfluid density in liquid He
Torsten Fliessbach
In a modified ideal Bose gas model we derive an expression for the temperature dependence of the superfluid fraction in liquid He. This expression leads to a fit formula for th…
The two-fluid model with superfluid entropy
R. Schaefer, T. Fliessbach
The two-fluid model of liquid helium is generalized to the case that the superfluid fraction has a small entropy content. We present theoretical arguments in favour of such a small…
A new sound mode in liquid Helium 4?
R. Schaefer, T. Fliessbach
This letter is based on the hypothesis of a small entropy content of the superfluid fraction of liquid helium. We show that such a superfluid entropy gives rise to a new sound mode…