Model-Independent Form Factor Relations at Large Nc
Vojtěch Krejčiřík · 2013
A new model-independent relation which holds in the large N c and chiral limits of QCD is demonstrated.It correlates the long distance part of the Fourier transform of the electromagnetic form factors of the nucleon.This relation was previously conjectured based on the analysis of semiclassical chiral soliton models.The main goal of this contribution is to show that the result is truly a model-independent by deriving it directly in large N c chiral perturbation theory.This new type of model-independent relation is of great value in studying holographic soliton models, since it is a model-independent method how to check whether the large N c and chiral physics are encoded correctly in these models.The role of the ordering of limits is studied.It is shown that large N c and chiral limit do not commute in the case of this particular relation.