Heavy hadron spectra from spin chains and strings
  We study the spectrum of hadronic states made up of very massive complex scalar fields in a confining gauge theory admitting a supergravity dual background. We show that for a sub-sector of operators dual to certain spinning strings, the mass spectrum exhibits an integrable structure equal to the Heisenberg spin chain, up to an overall factor. This result is compared with the corresponding string prediction. 
A.L. Cotrone, L. Martucci, J.M. Pons and P. Talavera