On the Existence of Combined Condensation of Neutral and charged Pions in Neutron Matter : A Realistic Calculation
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概要
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Combined condensation of neutral and charged pions at high-density neutron matter is studied in an approach based on the chiral symmetry. Energy density in the combined π^0-π^c condensed phase to be considered as most energetically favored is derived in a realistic calculation, where we take into account the isobar Δ(1232) degrees of freedom, baryon-baryon short-range correlations described in terms of the Landau-Migdal parameter g', and form factors in the π-baryon vertex. Characteristic features of this phase are discussed in comparison with those of the pure π^0 or the pure π^c condensation. The combined π^0-π^c condensed phase sets in at baryon density (3〜5) times the nuclear density ρ_0 depending on g' after the appearance of the pure π^c condensed phase.
- 理論物理学刊行会の論文
- 1987-12-25
著者
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Tatsumi Toshitaka
Department Of Physics Kyoto University
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Muto Takumi
Department Of Physics Chiba Institute Of Technology
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