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Separable form of a low-momentum realistic NN interaction

Abstract : The low-momentum interaction Vlow-k derived from realistic models of the nucleon-nucleon interaction is presented in a separable form. This separable force is supported by a contact interaction to achieve the saturation properties of symmetric nuclear matter. Bulk properties of nuclear matter and finite nuclei are investigated for the separable form of Vlow-k and two different parametrizations of the contact term. The accuracy of the separable force in Hartree-Fock calculations with respect to the original interaction Vlow-k is discussed. For a cutoff parameter Λ of 2  fm-1, a representation by a rank-2 separable force yields sufficient accuracy, while higher ranks are required for larger cutoff parameters. The resulting separable force is parametrized in a simple way to allow for an easy application in other nuclear structure calculations.
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http://hal.in2p3.fr/in2p3-00511228
Contributor : Sophie Heurteau <>
Submitted on : Tuesday, August 24, 2010 - 11:13:29 AM
Last modification on : Wednesday, September 16, 2020 - 4:07:55 PM

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P. Grygorov, E. N. E. van Dalen, H. Müther, J. Margueron. Separable form of a low-momentum realistic NN interaction. Physical Review C, American Physical Society, 2010, 82, pp.014315. ⟨10.1103/PhysRevC.82.014315⟩. ⟨in2p3-00511228⟩

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