Light-Front Holography and AdS/QCD Correspondence

Abstract

Light-Front Holography is a remarkable consequence of the correspondence between string theory in AdS space and conformal field theories in physical-space time. It allows string modes $\Phi (z)$ in the AdS fifth dimension to be precisely mapped to the light-front wavefunctions of hadrons in terms of a specific light-front impact variable $\zeta$ which measures the separation of the quark and gluonic constituents within the hadron. This mapping was originally obtained by matching the exact expression for electromagnetic current matrix elements in AdS space with the corresponding exact expression for the current matrix element using light-front theory in physical space-time. More recently we have shown that one obtains the identical holographic mapping using matrix elements of the energy-momentum tensor, thus providing an important consistency test and verification of holographic mapping from AdS to physical observables defined on the light-front. The resulting light-front Schrodinger equations predicted from AdS/QCD give a good representation of the observed meson and baryon spectra and give excellent phenomenological predictions for amplitudes such as electromagnetic form factors and decay constants.

14 pages. Presented at QCD Down Under II, Auckland, New Zealand, January 17-19, 2008

References in corpus (17)

• Gauge-Invariant Decomposition of Nucleon Spin and Its Spin-Off
• Quantum Chromodynamics and Other Field Theories on the Light Cone
• QCD and a Holographic Model of Hadrons
• Linear Confinement and AdS/QCD
• Hard Scattering and Gauge/String Duality
• Chiral symmetry breaking from five dimensional spaces
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• Hadronic Spectrum of a Holographic Dual of QCD
• Light-Front Hadron Dynamics and AdS/CFT Correspondence
• Light-Front Dynamics and AdS/QCD Correspondence: Gravitational Form Factors of Composite Hadrons
• Gravitational Form Factors of Vector Mesons in an AdS/QCD Model
• Direct measurement of the pion valence quark momentum distribution, the pion light-cone wave function squared
• Determination of the effective strong coupling constant alpha_{s,g_1}(Q^2) from CLAS spin structure function data
• Spin Structure of Nucleon and Equivalence Principle
• Conformal Symmetry and Pion Form Factor: Soft and Hard Contributions
• On Condensates in Strongly Coupled Gauge Theories

Cited by in corpus (2)

• Quantum Simulation of Quantum Field Theory in the Light-Front Formulation
• Simulating Hadronic Physics on NISQ devices using Basis Light-Front Quantization