Chiral symmetry breaking in the Wegner-Houghton approach
  The Wegner-Houghton formulation of the exact renormalization group evolution equation is used in order to study the chiral symmetry breaking of the linear sigma model coupled to an isospin doublet of quarks. A numerical investigation for a particular truncation of the equation which includes the scalar field renormalization function is presented. 
A. Bonanno and D. Zappala'