Abstract
Following a general formalism recently developed by Rainer and Serene and using a plausible approximation for the normal-state vertex function, we calculate the strong-coupling corrections δF SC to the free energy of superfluid3He. We express δF SC in terms of the Fermi liquid scatteirng amplitudesA 0 ,A 1 ,B 0 , andB 1 and the invariant combinations of the order parameter. We also calculate the jump in specific heat atT c for theA 1 , Balian-Werthamer (BW), and Anderson-Brinkman-Morel (ABM) states, the initials slope of the superfluid mass density and nuclear spin susceptibility in the BW and AMB states vs.T/T c atT c , the initial slope of theT AB line vs. pressure at the polycritical point, and the effect of a small magnetic field on theT AB line. The calculated values of all the above properties are in reasonable agreement with the experimental ones.
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Work supported in part by grant No. 4630 of the National Research Council of Canada.
For a preliminary version of this work see Ref. 1.
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Kuroda, Y., Nagi, A.D.S. On the strong-coupling effects in superfluid3He. J Low Temp Phys 25, 569–586 (1976). https://doi.org/10.1007/BF00657284
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DOI: https://doi.org/10.1007/BF00657284