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Separable interactions and liquid 3He

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  • Nijhoff, F.W.
  • Capel, H.W.

Abstract

A rigorous expression is given for the free energy of a system of fermions in the presence of a magnetic field interacting via a pairing hamiltonian in the weak-coupling limit. Starting from this expression Landau expansions are derived in two special cases, i.e. the case of general l-wave pairing in zero field and the case of l = 1 pairing, which applies to liquid 3He, in non-zero field.

Suggested Citation

  • Nijhoff, F.W. & Capel, H.W., 1981. "Separable interactions and liquid 3He," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 106(3), pages 369-397.
    • Handle: RePEc:eee:phsmap:v:106:y:1981:i:3:p:369-397
    DOI: 10.1016/0378-4371(81)90119-9
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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.
    3. Bogolubov, N.N. & Ermilov, A.N. & Kurbatov, A.M., 1980. "On coexistence of superconductivity and ferromagnetism," Physica A: Statistical Mechanics and its Applications, Elsevier, vol. 101(2), pages 613-628.
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