Resonating Mean-Field Theoretical Description of π and σ Mesons by the Nambu-Jona-Lasinio Model(§7. Dynamical Symmetry Breaking and Sigma/Higgs-Boson,Possible Existence of the σ-Meson and Its Implications to Hadron Physics)
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概要
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Using the Nambu-Jona-Lasinio (NJL) model, dynamical chiral-symmetry breaking, light-mesons spectra and properties of the mesons have been investigated on the basis of conventional Hartree-Fock approach. In order to show the advantage of the resonating mean-field theory for a fermion system with large-quantum fluctuations over the usual mean-field theory, we have applied it successfully to the NJL model to describe precisely phenomena associated with pionic excitation. We apply it further to describe more accurately phenomena which associate simaltaneously with pionic and sigma mesonic excitations.
- 素粒子論グループ 素粒子研究編集部の論文
- 2001-02-20
著者
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PROVIDENCIA Joao
Centro de Fisica Teorica, Universidade de Coimbra
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Providencia Joao
Centro De Fisica Teorica Universidade De Coimbra
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Nishiyama S
Centro De Fisica Teorica Universidade De Coimbra:(present Office)department Of Physics Kochi Univers
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Nishiyama Seiya
Centre De Fisica Teorica Universidade De Coimbra:department Of Physics Kochi University
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Ohno Osamu
Department Of Applied Chemistry Faculty Of Science And Technology Keio University
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Ohno Osamu
Department Of Physics Kochi University
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Providencia Joao
Centro De Fisica Teorica (inic) Universidade De Coimbra
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da Providencia
Centro de Fisica Teorica, Universidade de Coimbra
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