6533b82efe1ef96bd129341b
RESEARCH PRODUCT
Phase transition in liquid 4HE by a mean field model
Mauro FabrizioMaria Stella Mongiovìsubject
PhysicsQuantum phase transitionLiquid heliumPhase transitionField (physics)ThermodynamicsCondensed Matter PhysicsKosterlitz–Thouless transitionMean field theoryHeat fluxMean phase-field modelPhase (matter)Quantum critical pointGeneral Materials ScienceSettore MAT/07 - Fisica MatematicaPhase transitiondescription
In this work the transition of 4He at the lambda line in presence of a Cattaneo- Maxwell heat flux is studied. A hydrodynamical model is formulated, which chooses as fundamental fields the velocity, the temperature, the heat flux and a phase field function f, for which a time dependent Ginzburg-Landau equation is proposed. Using this model we are able to describe the phase transition and to obtain the pressure-temperature phase diagram which represents the transition, the thermodynamic restrictions and a maximum theorem for the phase field.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2013-02-01 |