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Separable interactions and liquid 3He

Author

Listed:
  • Nijhoff, F.W.
  • Capel, H.W.
  • Den Breems, A.

Abstract

In this paper we derive the Landau expansion for the ordered phases of liquid 3He in the presence of a magnetic field starting from a model hamiltonian which contains an l = 1 pairing interaction of the BCS type and a contact term of the Hubbard type. In the derivation use is made of an exact theorem in the theory of separable interactions and the contribution from the Hubbard interaction is evaluated in second order perturbation calculation. Some typical differences with the results based on a spin fluctuation theory are mentioned.

Suggested Citation

  • Nijhoff, F.W. & Capel, H.W. & Den Breems, A., 1985. "Separable interactions and liquid 3He," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 130(3), pages 375-411.
    • Handle: RePEc:eee:phsmap:v:130:y:1985:i:3:p:375-411
    DOI: 10.1016/0378-4371(85)90037-8
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    References listed on IDEAS

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    1. den Ouden, L.W.J. & Capel, H.W. & Perk, J.H.H. & Tindemans, P.A.J., 1976. "Systems with separable many-particle interactions. I," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 85(1), pages 51-70.
    2. Blackburn, Donald J. & Brinkman, George L. & Driver, Herbert C., 1978. "Farm Business, Behavioural and Participation Characteristics of Limited Resource Farmers," Working Papers 245003, University of Guelph, Department of Food, Agricultural and Resource Economics.
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    Cited by:

    1. Nijhoff, F.W. & Capel, H.W. & Den Breems, A., 1986. "Separable interactions and liquid 3He," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 135(2), pages 295-327.
    2. Capel, H.W. & Schakel, Adriaan M.J., 1989. "Symmetry breaking patterns in superfluid 3He," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 160(3), pages 409-441.
    3. Capel, H.W. & Nijhoff, F.W. & Den Breems, A., 1986. "Separable interactions and liquid 3He," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 139(2), pages 256-305.
    4. Brussaard, P. & van Weert, Ch.G., 1996. "Effective action for the superfluid Fermi gas," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 228(1), pages 102-114.

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