Amplification of Quantum Meson Modes in the Late Time of the Chiral Phase Transition(Nuclear Physics)

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概要

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• It is shown that there exists a possibility for the amplification of amplitudes of quantum pion modes with low momenta in the late time of the chiral phase transition by using the Gaussian wave functional approximation in the O(4) linear sigma model. It is also shown that amplification occurs in the mechanism of the resonance through forced oscillation as well as parametric resonance induced by the small oscillation of the chiral condensate. These mechanisms are investigated in both the cases of a spatially homogeneous system and a spatially expanded system described by the Bjorken coordinate.

• 理論物理学刊行会の論文
• 2005-02-25

著者

• TSUE Yasuhiko

  Physics Division, Faculty of Science, Kochi University

• NISHIYAMA Seiya

  Physics Division, Faculty of Science, Kochi University

• Nishiyama Seiya

  Physics Division Faculty Of Science Kochi University

• Tsue Y

  Physics Division Faculty Of Science Kochi University

• Tsue Yasuhiko

  Physics Division Faculty Of Science Kochi University

• WATANABE Kazu

  Department of Applied Science, Kochi University

• Watanabe Kazu

  Department Of Applied Science Kochi University:(present Address)kochi Gakuen Kochi Junior High Schoo

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