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Phase diagram for the superfluid Fermi-gas

✍ Scribed by P. Brussaard; M.A. Baranov; M.Yu. Kagan; Ch.G. van Weert; H.W. Capel

Book ID
104341353
Publisher
Elsevier Science
Year
1997
Tongue
English
Weight
853 KB
Volume
234
Category
Article
ISSN
0378-4371

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✦ Synopsis

We consider a Fermi-gas with a short-range repulsive interaction. Strong coupling corrections to the Ginzburg-Landau free energy functional for the superfluid phase are calculated in thirdorder perturbation theory. In zero magnetic field and for small values of the coupling constant the BW-phase has the lowest minimal free energy. For increasing coupling constant a phase transition to the ABM phase occurs, yielding theoretical support to identify the A phase observed in 3He with the ABM phase.

πŸ“œ SIMILAR VOLUMES

Effective action for the superfluid Ferm
Effective action for the superfluid Fermi gas
✍ P. Brussaard; Ch.G. van Weert πŸ“‚ Article πŸ“… 1996 πŸ› Elsevier Science 🌐 English βš– 703 KB

In this paper we revisit the derivation of the Landau expansion for superfluid 'He. Following Nijhoff. Cape1 and Den Breems we adopt a model interaction which contains an L = I pairing interaction and a contact term of the Hubbard type. We formulate the problem in the language of the path integral a