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Nuclear energy density functional inspired by an effective field theory | | Panagiota Papakonstantinou
; Tae-Sun Park
; Yeunhwan Lim
; Chang Ho Hyun
; | | Date: |
14 Jun 2016 | | Abstract: | Inspired by an effective field theory (EFT) for Fermi systems, we write the
nuclear energy density functional (EDF) as an expansion in powers of the Fermi
momentum $k_F$, or the cubic root of the density $
ho^{1/3}$. With the help of
pseudodata from microscopic calculations we fit the coefficients of the
functional within a wide range of densities relevant for nuclei and neutron
stars. The functional already at low order can reproduce known or adopted
values of nuclear matter near saturation, a range of existing microscopic
results on asymmetric matter, and a neutron-star mass-radius relation
consistent with observations. Our approach leads to a transparent expansion of
Skyrme-type EDFs and opens up many possibilities for future explorations in
nuclei and homogeneous matter. | | Source: | arXiv, 1606.4219 | | Services: | Forum | Review | PDF | Favorites | |
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