Guangxi Univ Technol, Collaborat Grp Hadron Phys & Nonperturbat QCD Stu, Liuzhou 545006, Peoples R China
; Chinese Acad Sci, Inst High Energy Phys, Beijing 100049, Peoples R China
Based on the fully dressed confining quark propagator, the pion decay constant f(pi), local quark vacuum condensate, and the masses of light quarks and in-medium Goldstone bosons are investigated. The pion decay constant f(pi) is predicted and compared with its value of experimental measurement. A great agreement is obtained. With the predicted f(pi) and values of Goldstone boson masses measured by experiments in free configuration the current masses of light quarks and the masses of in-medium Goldstone bosons are obtained.