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Paper   IPM / Physic / 7334
School of Physics
  Title:   Lowest Order Constrained Variational Method Applied to Liquid 3He
  Author(s): 
1.  M. Modarres
2.  H.R. Moshfegh
3.  K. Fallahi
  Status:   Published
  Journal: Eur. Phys. J. B
  Vol.:  36
  Year:  2003
  Pages:   485-490
  Supported by:  IPM
  Abstract:
The energy of normal liquid 3He is obtained using the lowest order constrained variational(LOCV) method. In order to test the vonvergence of the cluster expansion series, the three-body cluster energy is calculated, with the LOCV correlation functions, and by imposing the normaliztion constraint on the two-body distribution function which includes three-body cluster correlations(LOCVE). It is shown that the normalization constraint plays an important role in leeping the higher cluster terms small. The resulting LOCVE calculation for the ground state energy of liquid 3He is compared with the available experimental data and the prediction from different theoretical techniques.

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