Abstract
The quasiparticle scattering amplitude is calculated from a semimicroscopic model by analytically solving a generalization of Landau's integral equation to momentum transfers up to 2 PF. This solution in general does not obey exchange symmetry for a given particle-hole irreducible vertex partf pp′(q). We establish conditions for and explicitly construct exchange-symmetric scattering amplitudes by adding higher angular momentum components. Results using certain models forf pp′(q) are compared with transport properties of liquid3He.
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Pfitzner, M., Wölfle, P. Quasiparticle scattering amplitude for normal liquid3He. J Low Temp Phys 51, 535–559 (1983). https://doi.org/10.1007/BF00683227
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DOI: https://doi.org/10.1007/BF00683227