Light-Front Holography: A First Approximation to QCD
Abstract
Starting from the Hamiltonian equation of motion in QCD, we identify an invariant light-front coordinate ζ which allows the separation of the dynamics of quark and gluon binding from the kinematics of constituent spin and internal orbital angular momentum. The result is a single-variable light-front Schrödinger equation for QCD which determines the eigenspectrum and the light-front wave functions of hadrons for general spin and orbital angular momentum. This light-front wave equation is equivalent to the equations of motion which describe the propagation of spin-J modes on anti-de Sitter (AdS) space.
- Publication:
-
Physical Review Letters
- Pub Date:
- February 2009
- DOI:
- 10.1103/PhysRevLett.102.081601
- arXiv:
- arXiv:0809.4899
- Bibcode:
- 2009PhRvL.102h1601D
- Keywords:
-
- 11.15.Tk;
- 12.38.Aw;
- Other nonperturbative techniques;
- General properties of QCD;
- High Energy Physics - Phenomenology;
- High Energy Physics - Theory
- E-Print:
- 4 pages. The limits of validity of the model are further discussed. To appear in Physical Review Letters