Laszlo Tisza and the two-fluid model of superfluidity

Publication date: Available online 10 November 2017 Source:Comptes Rendus Physique Author(s): Sébastien Balibar The “two-fluid model” of superfluidity was first introduced by Laszlo Tisza in 1938. On that year, Tisza published the principles of his model as a brief note in Nature and two articles in French in the Comptes rendus de l'Académie des sciences, followed in 1940 by two other articles in French in the Journal de physique et le Radium. In 1941, the two-fluid model was reformulated by Lev Landau on a more rigorous basis. Successive experiments confirmed the revolutionary idea introduced by Tisza: superfluid helium is indeed a surprising mixture of two fluids with independent velocity fields. His prediction of the existence of heat waves, a consequence of his model, was also confirmed. Then, it took several decades for the superfluidity of liquid helium to be fully understood.

Source: Comptes Rendus Physique - November 10, 2017 Category: Physics Source Type: research