Gribov Confinement and Chiral Perturbation Theory

Abstract

I discuss the chiral dynamics of Gribov's theory of confinement. At a critical coupling $α_s^c$ the light quark vacuum undergoes a series of phase transitions which should be taken into account in the application of chiral perturbation theory. The Gribov theory offers a simple explanation of the value of the pion nucleon sigma term without need to invoke a large strange quark component in the nucleon.

Cavendish Preprint HEP 94/11, talk given at Juelich conference: "Physics with GeV Particle Beams" ---- plain LaTeX --- macro format changed