We use gauge/string duality to model some hybrid pseudopotentials in a pure $SU(N)$ gauge theory. The pseudopotentials under consideration can’t be described by a single Nambu-Goto string. This is why we call them “exotic”. A comparison with the calculation of the pseudopotential shows the universality of the spatial string tension.

• Received 15 November 2012

DOI:https://doi.org/10.1103/PhysRevD.87.065006