Exotic Hybrid Quark Potentials
  We use gauge/string duality to model some hybrid heavy-quark potentials. The potentials under consideration can't be described by a single Nambu-Goto string. This is why we call them "exotic". For $\Sigma_u^-$, the result is in quite good agreement with lattice simulations. 
Oleg Andreev
hep-ph hep-lat hep-th nucl-th