Sebastien Balibar
Published 2003-03-26Version 1
A few years after the discovery of Bose Einstein condensation in several gases, it is interesting to look back at some properties of superfluid helium. After a short historical review, I comment shortly on boiling and evaporation, then on the role of rotons and vortices in the existence of a critical velocity in superfluid helium. I finally discuss the existence of a condensate in a liquid with strong interactions, and the pressure variation of its superfluid transition temperature.
Comments: Conference "Bose Einstein Condensation", Institut henri Poincare, Paris, 29 march 2003
Superfluid transition temperature from the Lindemann-like criterion
Bose Einstein condensation in a gas of the Fibonacci oscillators
Bose Einstein Condensation in solid 4He
