Light-Front Holography in QCD and Hadronic Physics

Abstract

We describe a procedure to extend the light-front holographic approach to hadronic physics to include light-quark masses. The proposed framework allows us to extend the formalism of de Alfaro, Fubini and Furlan to the frame-independent light-front Hamiltonian theory in the approximation where the dynamics in the invariant transverse variable is unchanged to first order in the quark masses. The confinement potential follows from an effective theory which encodes the fundamental conformality of the classical QCD Lagrangian and leads to a semiclassical relativistic light-front wave equation for arbitrary spin. In particular, the K meson spectrum is successfully described without modifying the emerging confinement scale. The Wilson loop criteria for confinement is maintained, since for light quark masses a harmonic potential and linear Regge trajectories in the light-front form of dynamics corresponds to a linear potential in the usual instant-form.

arXiv comment14 pages, 1 figure. Based on an invited talk, presented by GdT at the Rencontres de Moriond, QCD and High Energy Interactions (2014)

References in corpus (23)

• Quantum Chromodynamics and Other Field Theories on the Light Cone
• Linear Confinement and AdS/QCD
• Hadronic Spectra and Light-Front Wavefunctions in Holographic QCD
• Light-Front Dynamics and AdS/QCD Correspondence: The Pion Form Factor in the Space- and Time-Like Regions
• Deep Inelastic Scattering and Gauge/String Duality
• Light-Front Holography: A First Approximation to QCD
• Light and heavy mesons in a soft-wall holographic approach
• Light-Front Dynamics and AdS/QCD Correspondence: Gravitational Form Factors of Composite Hadrons
• Dilaton in a soft-wall holographic approach to mesons and baryons
• An AdS/QCD holographic wavefunction for the rho meson and diffractive rho meson electroproduction
• Gravitational Form Factors of Vector Mesons in an AdS/QCD Model
• Threefold Complementary Approach to Holographic QCD
• Kinematical and Dynamical Aspects of Higher-Spin Bound-State Equations in Holographic QCD
• Effective confining potentials for QCD
• Chiral Symmetry Breaking and Meson Wave Functions in Soft-Wall AdS/QCD
• On confinement in a light-cone Hamiltonian for QCD
• Predicting the isospin asymmetry in $B->K\ast \gamma$ using holographic AdS/QCD Distribution Amplitudes for the K*
• Predicting B->K* form factors in light-cone QCD
• Predicting the $B->\rho$ form factors using AdS/QCD Distribution Amplitudes for the $\rho$ meson
• Hadron Spectroscopy and Dynamics from Light-Front Holography and Conformal Symmetry
• Light-Front Holographic QCD and the Confinement Potential
• Light-Front Holographic QCD and Color Confinement
• Modified Anti-de-Sitter Metric, Light-Front Quantized QCD, and Conformal Quantum Mechanics

Cited by in corpus (4)

• Baryon Spectrum from Superconformal Quantum Mechanics and its Light-Front Holographic Embedding
• Supersymmetry Across the Light and Heavy-Light Hadronic Spectrum
• The Light-Front Schrödinger Equation and Determination of the Perturbative QCD Scale from Color Confinement
• QCD and High Energy Interactions: Moriond 2014 Theory Summary