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New Perspectives for QCD from AdS/CFT

Stanley J. Brodsky
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Abstract

The AdS/CFT correspondence between conformal field theory and string states in an extended space-time has provided new insights into not only hadron spectra, but also their light-front wavefunctions. We show that there is an exact correspondence between the fifth-dimensional coordinate of anti-de Sitter space $z$ and a specific impact variable $ζ$ which measures the separation of the constituents within the hadron in ordinary space-time. This connection allows one to predict the form of the light-front wavefunctions of mesons and baryons, the fundamental entities which encode hadron properties and scattering amplitudes. A new relativistic Schrödinger light-cone equation is found which reproduces the results obtained using the fifth-dimensional theory.

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Stanley J. Brodsky. 2006-08-01. New Perspectives for QCD from AdS/CFT. https://doi.org/10.1142/9789812708267_0062

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