Orthonormalization procedure for chiral effective nuclear field theory
  We show that the Q-box expansion of nuclear many-body physics can be applied in nuclear effective field theory with explicit pions and external sources. We establish the corresponding power counting and give an algorithm for the construction of a hermitean and energy-independent potential for arbitrary scattering processes on nucleons and nuclei to a given order in the chiral expansion. Various examples are discussed in some detail. 
H. Krebs, V. Bernard, Ulf-G. Mei{\ss}ner