摘要
Through theoretical derivation,the vacuum configuration of the bilocal field in GCM is equivalent to dynamical mass of quarks.Under the approximation of instanton dilute liquid,an analytical expression for the vacuum configuration is obtained.Based on it,the decay constants and masses of π and σ mesons are calculated.The results are much more improved than those given by the previous GCM calculations.
Through theoretical derivation,the vacuum configuration of the bilocal field in GCM is equivalent to dynamical mass of quarks.Under the approximation of instanton dilute liquid,an analytical expression for the vacuum configuration is obtained.Based on it,the decay constants and masses of π and σ mesons are calculated.The results are much more improved than those given by the previous GCM calculations.
基金
Project supported by the National Natural Science Foundation of China and the Chinese Academy of Sciences.
