Pion Pair Condensed Nuclear Matter in the Extended Linear Sigma Model(Nuclear Physics)

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概要

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• The linear sigma model with vector meson contributions, higher-power chiral loop terms, and additional chiral symmetry breaking terms is applied to nuclear matter at a finite nuclear density. Nonzero classical pion fields are assumed where the pion effective mass squared is less than zero for sigma condensed nuclear matter. It is shown that, in these regions, pion pair condensed nuclear matter has less energy than sigma condensed nuclear matter without classical pion fields. Pion condensed nuclear matter can have a minimum energy of -16.3MeV and an incompressibility of about 300MeV at a normal nuclear density ρ_0=0.153/fm^3, without the introduction of additional chiral symmetry breaking terms.

• 理論物理学刊行会の論文
• 2008-10-25

著者

• Tezuka Hirokazu

  Natural Science Laboratory Toyo University

関連論文

• Positive Energy Bound State Solutions in Relativistic Coulomb Potential
• Pion Pair Condensed Nuclear Matter in the Extended Linear Sigma Model(Nuclear Physics)
• Sigma Condensed Nuclear Matter in the Extended Linear Sigma Model(Nuclear Physics)

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