Exotic Hybrid Quark Potentials

Abstract

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.

Comments: 14 pages, 5 figures; v2: typos corrected