Size effects in superfluid helium. 2: Investigation by a functional method
Abstract
A model of the critical behavior of the superfluid phase of helium consistent with the general idea of the phase transition of Landau is presented. The model explains the logarithmic singularity of the bulk helium at the lambda point. The fluctuations of the order parameter play a dominant role in the properties of the system. This model makes it possible to calculate the superfluid density in good agreement with experimental results. A simple assumption on the geometrical configuration is made and the critical properties of helium due to size effects (shift in the transition temperature and specific heat, and superfluid density) are discussed.
- Publication:
-
NASA STI/Recon Technical Report N
- Pub Date:
- 1975
- Bibcode:
- 1975STIN...7524972M
- Keywords:
-
- Liquid Helium;
- Particle Size Distribution;
- Superfluidity;
- Landau-Ginzburg Equations;
- Logarithms;
- Mathematical Models;
- Particle Density (Concentration);
- Superconductors;
- Transition Temperature;
- Engineering (General)