摘要
The energy levels,En.of pions in multiparticle systems have been calculated by using the probability distribution,P(n,k),of the independent-creation model of multi-fire balls and the density matrix method of quantum statistics.The result,E_(n)=E_(0)+nk_(B)Tln(1+1/n)-k_(B)Tln xΓ(n+k)/Γ(k)Γ(n+1),shows that the nonlinear interaction depends on k.and it can take place only between different fire-balls.
作者
王政之
WANG Zhengzhi(Department of Optics,Shandong University,Jinan)
