Nonlocal energy density functionals for pairing and beyond-mean-field calculations

Abstract : We propose to use two-body regularized finite-range pseudopotential to generate nuclear energy density functional (EDF) in both particle-hole and particle-particle channels, which makes it free from self-interaction and self-pairing, and also free from singularities when used beyond mean field. We derive a sequence of pseudopotentials regularized up to next-to-leading order (NLO) and next-to-next-to-leading order (N2LO), which fairly well describe infinite-nuclear-matter properties and finite open-shell paired and/or deformed nuclei. Since pure two-body pseudopotentials cannot generate sufficiently large effective mass, the obtained solutions constitute a preliminary step towards future implementations, which will include, e.g., EDF terms generated by three-body pseudopotentials.
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Submitted on : Thursday, December 1, 2016 - 7:16:37 AM
Last modification on : Tuesday, March 27, 2018 - 3:37:47 PM

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K. Bennaceur, A. Idini, J. Dobaczewski, P. Dobaczewski, M. Kortelainen, et al.. Nonlocal energy density functionals for pairing and beyond-mean-field calculations. Journal of Physics G Nuclear Physics, Institute of Physics (IOP), 2017, 44, pp.045106. ⟨10.1088/1361-6471/aa5fd7⟩. ⟨in2p3-01406293⟩

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