Proton Mixing in π^0-Condensed Phase of Neutron Star Matter : Nuclear Physics

概要

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The mixing of protons in neutron star matter under the occurrence of π^0 condensation is studied in the framework of the ALS (Alternating Layer Spin) model and with the effective interaction approach. It is found that protons are likely to mix under the situation and cause a remarkable energy gain from neutron matter as the density increases. the extent of proton mixing becomes larger by about a factor (1.5〜2.5) according to the density ρ<sime> (2-5)ρ_0, ρ_0 being the nuclear density, as compared with that for the case without pion condensation. The reason can be attributed to the two-dimensional nature of the Fermi gas state characteristic of the nucleon system under π^0 condensation.
理論物理学刊行会の論文
1984-08-25