Physics – Condensed Matter – Superconductivity
Scientific paper
2000-07-21
Sov. Phys. JETP 90 (2000) 861
Physics
Condensed Matter
Superconductivity
The version of the paper (JETP 90 (2000) 861) with author proofs, which were not taken into account in translated journal publ
Scientific paper
10.1134/1.559173
High order perturbation theory corrections to the superfluid transition temperature in a weakly interacting Fermi gas with repulsive interaction are calculated. This involves calculating the contributions of third and fourth order diagrams in the gas parameter and taking into account effects of retardation. The contributions from both second, third and fourth orders result in the effective attraction in p-wave channel. It is shown that the critical temperature is mainly determined by second and third orders terms of perturbation theory. The dependence of the critical temperature on an external magnetic field is found. We discuss possible applications of the results to the diluted 3He-4He mixtures and trapped neutral-atom Fermi gases.
Baranov Mikhail A.
Efremov Dmitri V.
Kagan Maxim Yu.
Mar'enko M. S.
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