Nucleon Mass from a Covariant Three-Quark Faddeev Equation

摘要

We report the first study of the nucleon where the full Poincare ´-covariant structure of the three-quarknamplitude is implemented in the Faddeev equation. We employ an interaction kernel which is consistentnwith contemporary studies of meson properties and aspects of chiral symmetry and its dynamicalnbreaking, thus yielding a comprehensive approach to hadron physics. The resulting current-mass evolutionnof the nucleon mass compares well with lattice data and deviates only by 5% from the quark-diquarknresult obtained in previous studies.