Intrinsic Critical Velocity of a Superfluid
- 4 September 1967
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 19 (10), 560-563
- https://doi.org/10.1103/physrevlett.19.560
Abstract
A fluctuation theory of the intrinsic critical velocity of a superfluid near the lambda point is developed in analogy with the droplet model of condensation of a supersaturated vapor. For the superfluid, vortex rings play the role of critical droplets in homogeneously nucleating transitions to states of lower superflow. A quantitative estimate is in reasonable agreement with recent experiments on helium.Keywords
This publication has 6 references indexed in Scilit:
- Theory of Critical-Point Scattering and Correlations. I. The Ising ModelPhysical Review B, 1967
- Theory of the condensation pointAnnals of Physics, 1967
- Superfluid Density and Scaling Laws for Liquid Helium nearTλPhysical Review Letters, 1966
- Relation between the superfluid density and order parameter for superfluid He near TcPhysics Letters, 1966
- Temperature Dependence of the Superfluid Density in He II NearTλPhysical Review Letters, 1966
- Quantized Vortex Rings in Superfluid HeliumPhysical Review B, 1964