Physics – High Energy Physics – High Energy Physics - Phenomenology
Scientific paper
2012-03-19
Physics
High Energy Physics
High Energy Physics - Phenomenology
Invited lectures presented by GdT at the Niccolo Cabeo International School of Hadronic Physics, Ferrara, Italy, May 2011 (73
Scientific paper
We show that the nonperturbative light-front dynamics of relativistic hadronic bound states has a dual semiclassical gravity description on a higher dimensional warped AdS space in the limit of zero quark masses. This mapping of AdS gravity theory to the boundary quantum field theory, quantized at fixed light-front time, allows one to establish a precise relation between holographic wave functions in AdS space and the light-front wavefunctions describing the internal structure of hadrons. The resulting AdS/QCD model gives a remarkably good accounting of the spectrum, elastic and transition form factors of the light-quark hadrons in terms of one parameter, the QCD gap scale. The light-front holographic approach described here thus provides a frame-independent first approximation to the light-front Hamiltonian problem for QCD. This article is based on lectures at the Niccolo Cabeo International School of Hadronic Physics, Ferrara, Italy, May 2011.
Brodsky Stanley J.
de Teramond Guy F.
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