abstracts[] |
{'sha1': '05b4a21c314564fa6405572feac183711a883be3', 'content': 'We construct three new Hartree-Fock-Bogoliubov (HFB) mass models, labeled\nHFB-19, HFB-20, and HFB-21, with unconventional Skyrme forces containing t_4\nand t_5 terms, i.e., density-dependent generalizations of the usual t_1 and\nt_2 terms, respectively. The new forces underlying these models are fitted\nrespectively to three different realistic equations of state of neutron matter\nfor which the density dependence of the symmetry energy ranges from the very\nsoft to the very stiff, reflecting thereby our present lack of complete\nknowledge of the high-density behavior of nuclear matter. All unphysical\ninstabilities of nuclear matter, including the transition to a polarized state\nin neutron-star matter, are eliminated with the new forces. At the same time\nthe new models fit essentially all the available mass data with rms deviations\nof 0.58 MeV and give the same high quality fits to measured charge radii that\nwe obtained in earlier models with conventional Skyrme forces. Being\nconstrained by neutron matter, these new mass models, which all give similar\nextrapolations out to the neutron drip line, are highly appropriate for studies\nof the r-process and the outer crust of neutron stars. Moreover, the\nunderlying forces, labeled BSk19, BSk20 and BSk21, respectively, are well\nadapted to the study of the inner crust and core of neutron stars. The new\nfamily of Skyrme forces thus opens the way to a unified description of all\nregions of neutron stars.', 'mimetype': 'text/plain', 'lang': 'en'}
{'sha1': '10e1ee8a3d5229a22de1f6849fb5e4e9fda99ee5', 'content': 'We construct three new Hartree-Fock-Bogoliubov (HFB) mass models, labeled\nHFB-19, HFB-20, and HFB-21, with unconventional Skyrme forces containing $t_4$\nand $t_5$ terms, i.e., density-dependent generalizations of the usual $t_1$ and\n$t_2$ terms, respectively. The new forces underlying these models are fitted\nrespectively to three different realistic equations of state of neutron matter\nfor which the density dependence of the symmetry energy ranges from the very\nsoft to the very stiff, reflecting thereby our present lack of complete\nknowledge of the high-density behavior of nuclear matter. All unphysical\ninstabilities of nuclear matter, including the transition to a polarized state\nin neutron-star matter, are eliminated with the new forces. At the same time\nthe new models fit essentially all the available mass data with rms deviations\nof 0.58 MeV and give the same high quality fits to measured charge radii that\nwe obtained in earlier models with conventional Skyrme forces. Being\nconstrained by neutron matter, these new mass models, which all give similar\nextrapolations out to the neutron drip line, are highly appropriate for studies\nof the $r$-process and the outer crust of neutron stars. Moreover, the\nunderlying forces, labeled BSk19, BSk20 and BSk21, respectively, are well\nadapted to the study of the inner crust and core of neutron stars. The new\nfamily of Skyrme forces thus opens the way to a unified description of all\nregions of neutron stars.', 'mimetype': 'application/x-latex', 'lang': 'en'}
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contribs[] |
{'index': 0, 'creator_id': None, 'creator': None, 'raw_name': 'S. Goriely', 'given_name': None, 'surname': None, 'role': 'author', 'raw_affiliation': None, 'extra': None}
{'index': 1, 'creator_id': None, 'creator': None, 'raw_name': 'N. Chamel', 'given_name': None, 'surname': None, 'role': 'author', 'raw_affiliation': None, 'extra': None}
{'index': 2, 'creator_id': None, 'creator': None, 'raw_name': 'J. M. Pearson', 'given_name': None, 'surname': None, 'role': 'author', 'raw_affiliation': None, 'extra': None}
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ext_ids |
{'doi': None, 'wikidata_qid': None, 'isbn13': None, 'pmid': None, 'pmcid': None, 'core': None, 'arxiv': '1009.3840v1', 'jstor': None, 'ark': None, 'mag': None, 'doaj': None, 'dblp': None, 'oai': None, 'hdl': None}
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issue |
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language |
en
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license_slug |
ARXIV-1.0
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[]
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release_date |
2010-09-20
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release_stage |
submitted
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release_type |
article
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release_year |
2010
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subtitle |
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title |
Further explorations of Skyrme-Hartree-Fock-Bogoliubov mass formulas.
XII: Stiffness and stability of neutron-star matter
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v1
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pdmsub6e7rbxvfpn2kwqxgcqgy
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