2021
DOI: 10.1103/physrevc.103.035807
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Abstract: We perform a systematic investigation of the chemical composition of the inner crust of a neutron star, using the extended Thomas-Fermi approximation, the Strutinsky integral correction for shell effects, and the BCS approximation for pairing. 15 Skyrme functionals were selected, which cover the range of values of important bulk properties of infinite nuclear matter, while also having pure neutron matter (PNM) equation of states (EoS) with varying degrees of stiffness. We find that a functional's low-density P… Show more

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Cited by 12 publications
(8 citation statements)
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“…It is shown that the proton content of the WS cells is correlated to the soft or stiff character of the slope of the pure neutron matter EoS for low average densities below 0.05 fm −3 . In this region the D1M and D1M* interactions predict a relatively stiff neutron matter EoS, which favors Z = 40 in the minimal energy configuration (see Figure 7 and Table II of [53]) in agreement with the conclusions drawn in [86]. In Figure 8 we show the neutron (red solid line) and proton (blue dashed line) density profiles inside the WS cell at different ρ av in the inner crust calculated with the D1M* interaction.…”
Section: Inner Crustsupporting
confidence: 82%
See 1 more Smart Citation
“…It is shown that the proton content of the WS cells is correlated to the soft or stiff character of the slope of the pure neutron matter EoS for low average densities below 0.05 fm −3 . In this region the D1M and D1M* interactions predict a relatively stiff neutron matter EoS, which favors Z = 40 in the minimal energy configuration (see Figure 7 and Table II of [53]) in agreement with the conclusions drawn in [86]. In Figure 8 we show the neutron (red solid line) and proton (blue dashed line) density profiles inside the WS cell at different ρ av in the inner crust calculated with the D1M* interaction.…”
Section: Inner Crustsupporting
confidence: 82%
“…With the increase in the average density some of these shell closures like Z = 28 and 50 are washed away (see the panel with ρ av = 0.07 fm −3 ). A systematic study of the inner crust composition performed using the extended TF approach including pairing correlations with a large set of Skyrme forces has been very recently reported [86]. It is shown that the proton content of the WS cells is correlated to the soft or stiff character of the slope of the pure neutron matter EoS for low average densities below 0.05 fm −3 .…”
Section: Inner Crustmentioning
confidence: 99%
“…Further constraints would be moreover advisable in order to possibly disentangle and recover also the thermal effects connected to the temperature evolution of the pairing correlations, whose importance within this context has been recently addressed (see Refs. [70,71]).…”
Section: Discussionmentioning
confidence: 99%
“…Figures 4-6 thus show that it is essential to verify the compatibility with the ab initio calculations down to very low densities to obtain realistic predictions for the properties of the NS crust. Incidentally, Shelley & Pastore (2021), who performed a systematic study of the NS inner-crust composition using several Skyrme functionals, also pointed out the importance of constraining the low-density part of the equation of state. The low-density EFT constraints and the arrows corresponding to the predictions of selected models are the same as in Fig.…”
Section: The Influence Of the Bulk Functionalmentioning
confidence: 99%