Large N constraints of pionless EFT: applications to few bodies

Abstract:  I will review the ideas of large N and effective field theories. In the limit of a large number of colors an enhanced symmetry of QCD emerges. This symmetry has been used to understand properties of hadrons and nuclei. It has also been used to reduce the number of unknown parameters in effective field theories for few nucleon systems. I will discuss some of these applications and introduce an additional manifestation of the large N limit.