RG Study of Particular Systems

Abstract

Any of the general methods introduced in the previous chapters can be applied to analyses of particular systems. In this chapter we consider application of the SE method to some simple examples. The central point of the SE approach is consideration of the characteristic set for the $\hat \Phi$ operator (see Sect. 5.3.2). As the set should define vertexes ĝ _k , which are multivariable functions, first of all, we should find representations for this functions reducing equations in partial derivatives to algebraic equations. The general approach to this problem is considered in the following section.