Based on thermofield dynamics, the temperature- and density-dependent effective mass and screening mass of ρ meson have been calculated. The effects of vacuum fluctuation corrections through effective nucleon mass are examined. We have shown that vacuum fluctuations give an important correction to the self-energy of the ρ meson and lead to a reduction of the ρ-meson mass in hot and dense matter. The temperature and density dependence of one-ρ-meson exchange potential with vacuum fluctuation correction is also given.

• Received 24 February 1997

DOI:https://doi.org/10.1103/PhysRevC.56.3336