Phase transition in liquid [sup 3]He in an aerogel at zero temperature

Mineev, V. P.
November 1997
JETP Letters;11/25/97, Vol. 66 Issue 10, p693
Academic Journal
An expansion of the thermodynamic potential in powers of the order parameter of the superfluid phase transition is found for liquid [sup 3]He in an aerogel at T=0. The discontinuity in the compressibility (sound velocity), which is the analog of the discontinuity in the specific heat for second-order temperature phase transitions, is calculated. The magnitude of the critical quantum fluctuations (zero-point vibrations) of the order parameter is estimated. © 1997 American Institute of Physics.


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