Dispersion relation of theρmeson in hot and dense nuclear matter

Ji-sheng Chen, Jia-rong Li, Peng-fei Zhuang
2003 Physical Review C  
The dispersion relation of ρ meson in both timelike and spacelike regimes in hot and dense nuclear medium is analyzed and compared with σ meson based on the quantum hadrodynamics model. The pole and screening masses of ρ and σ are discussed. The behavior of screening mass of ρ is different from that of σ due to different Dirac- and Fermi-sea contributions at finite temperature and density.
doi:10.1103/physrevc.67.068202 fatcat:mkxlkfvufnbazkcyjyf22n25h4