Magnetic string contribution to hadron dynamics in QCD
  Dynamics of a light quark in the field of static source (heavy-light meson) is studied using the nonlinear Dirac equation, derived recently. Special attention is paid to the contribution of magnetic correlators and it is found that it yields a significant increase of string tension at intermediate distances. The spectrum of heavy-light mesons is computed with account of this contribution and compared to experimental and lattice data. 
Yu.A. Simonov (ITEP,Moscow, Russia), J.A. Tjon (ITP,U. Utrecht and   KVI, Groningen, The Netherlands)