Chiral invariant renormalization of the pion--nucleon interaction

Abstract

The leading divergences of the generating functional for Green functions of quark currents between one--nucleon states are calculated with heat kernel techniques. The results allow for a chiral invariant renormalization of all two--nucleon Green functions of the pion--nucleon system to $O(p^3)$ in the low--energy expansion.

Comments: 13 pages, LaTex, 2 figures in appended postscript file, Univ. Wien preprint UWThPh-1994-1