Field Theory;
Exact Solution;
Exact Result;
Diagrammatic Representation;
Full Dependence;
D O I:
10.1007/s100520100630
中图分类号:
O412 [相对论、场论];
O572.2 [粒子物理学];
学科分类号:
摘要:
A study of zero-dimensional theories. based oil exact results, is presented. First, relying on a simple diagrammatic representation of the theory, equations involving the generating function of all functions are constructed. Second. exact solutions of these equations are obtained for connected Green's several theories. Finally, renormalization is carried out. Based on the anticipated knowledge of the exact solutions the full dependence on the renormalized coupling constant is studied.