Pion Velocity near the Chiral Phase Transition Point in the Vector Manifestation(Non-equilibrium Dynamics in the QCD Phase Transitions)
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概要
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We study the pion velocity near the critical temperature T_c of chiral symmetry restoration in QCD. Using chiral perturbation theory based on hidden local symmetry (HLS) as an effective field theory, where the chiral symmetry restoration is realized as the vector manifestation (VM), we show that the pion velocity for T→T_c is close to the speed of light, v_π(T)=0.83-0.99 which is at variance with the sigma model result which predicts v_π(T_c)=0. Our prediction on v_π(T_c) is compared with the value extracted from the recent RHIC data.
- 素粒子論グループ 素粒子研究編集部の論文
- 2005-10-20
著者
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Harada Masayasu
Department of Physics, Nagoya University
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Sasaki Chihiro
Technische Univ. Muenchen Garching Deu
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Harada Masayasu
Nagoya Univ. Nagoya Jpn
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Harada Masayasu
Department Of Physics Kyoto University
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Rho Mannque
Institut De Physique Theorique Cea:department Of Physics Hanyang University
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Rho Mannque
Service De Physique Theorique
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Sasaki Chihiro
Gesellschaft fur Schwerionenforschung (GSI)
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原田 正康
Department of Physics, Nagoya University
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SASAKI Chihiro
Physik Department, Technische Universitat Munchen
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RHO Mannque
Institut de Physique Theorique, CEA:Department of Physics, Hanyang University
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