Collective excitations in neutron-star crusts

[摘要] We explore the spectrum of low-energy collective excitations in the crust of a neutron star, especially in the inner region where neutron-proton clusters are immersed in a sea of superfluid neutrons. The speeds of the different modes are calculated systematically from the nuclear energy density functional theory using a Skyrme functional fitted to essentially all experimental atomic mass data.

[发布机构] Institut d'Astronomie et d'Astrophysique, Université Libre de Bruxelles, CP226, Brussels; 1050, Belgium^1;Instituto de Astronomía, Universidad Nacional Autonóma de México, Mexico D.F.; 04510, Mexico^2;Institute for Nuclear Theory, University of Washington, Seattle; WA; 98195, United States^3

[效力级别] 天文学 [学科分类] 天文学(综合)

[关键词] Atomic mass;Collective excitations;Energy density functional theory;Inner region;Low-energy collective excitations;Neutron stars