π AND σ MESON EXCHANGE POTENTIALS OF NUCLEON-NUCLEON INTERACTION AT FINITE TEMPERATURE
- Received Date: 1900-01-01
- Accepted Date: 1900-01-01
- Available Online: 1990-03-05
Abstract: On the basis of the field theory at finite temperature,the temperature dependences of effective masses of π and σ meson at the nucleon level are discussed.The character change of nucleon-nucleon interaction at low temperature T(T≤200MeV) are also investigated.The temperature dependences of effective masses of π and σ meson are in good agreemet with the results obtained from the Nambu-Jonal-Lasinio model at the quark level.