Effective Masses of Mesons and Nucleon in Hot Medium for the Walecka Model
GAO Song, ZHANG Yi-jun SU Ru-keng1
Department of Physics, Fudan University, Shanghai 200433
1CCAST (World Laboratory), P. O. Box 8730, Beijing 100080 and Department of Physics, Fudan University, Shanghai 200433
Effective Masses of Mesons and Nucleon in Hot Medium for the Walecka Model
GAO Song;ZHANG Yi-jun SU Ru-keng1
Department of Physics, Fudan University, Shanghai 200433
1CCAST (World Laboratory), P. O. Box 8730, Beijing 100080 and Department of Physics, Fudan University, Shanghai 200433
Abstract： Based on the thermo-field dynamics, the temperature and density dependencies of the effective masses of σ, ω mesons and nucleon in the walecka model have been calculated. The vacuum fluctuation effect is examined. It is found that the vacuum fluctuation is very important and leads to a reduction of ω-meson mass and an enhancement of σ-meson mass in hot and dense medium.
GAO Song;ZHANG Yi-jun SU Ru-keng. Effective Masses of Mesons and Nucleon in Hot Medium for the Walecka Model[J]. 中国物理快报, 1996, 13(2): 89-92.
GAO Song, ZHANG Yi-jun SU Ru-keng. Effective Masses of Mesons and Nucleon in Hot Medium for the Walecka Model. Chin. Phys. Lett., 1996, 13(2): 89-92.
1996, Vol. 13 
