In Nature 439, 921-923 (23 February 2006), Dr. Nick Evans reviews
the recent advances on "duality" connection between string theory and the gauge theory of the strong force: quantum chromodynamics (QCD); especially focusing on the article by Professor Misha Stephanov
et al "QCD and a Holographic Model of Hadrons" Phys. Rev. Lett. 95, 261602 (2005).