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Quantum Chromodynamics and Other Field Theories on the Light Cone
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We discuss the light-cone quantization of gauge theories as a calculational tool for representing hadrons as QCD bound-states of relativistic quarks and gluons, and also as a novel method for simulating quantum field theory on a computer. The light-cone Fock state expansion of wavefunctions provides a precise definition of the parton model and a general calculus for hadronic matrix elements. We present several new applications of light-cone Fock methods, including calculations of exclusive weak decays of heavy hadrons, and intrinsic heavy-quark contributions to structure functions. Discretized light-cone quantization, is outlined and applied to several gauge theories. We also discuss the construction of the light-cone Fock basis, the structure of the light-cone vacuum, and outline the renormalization techniques required for solving gauge theories within the Hamiltonian formalism on the light cone.
Forward citations
Cited by 36 Pith papers
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TMD factorization in diffractive heavy-quark production in photon-nucleus collisions
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Matching collinear factorization with color-glass condensate for inclusive and exclusive deep inelastic scattering
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Pair production overlapping soft bremsstrahlung enhances the in-medium radiation rate above the standard LPM value, opposite to the 1964 prediction of Galitsky and Gurevich.
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Analytic Solution for the Helicity Evolution Equations at Small $x$ and Large $N_c\&N_f$
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Exact results for scattering on ultra-short plane wave backgrounds
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Radiative corrections in neutral-current (anti)neutrino elastic scattering at $\text{GeV}$ energies I: Nucleon targets
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The Maximal Entanglement Limit in Statistical and High Energy Physics
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Quantum entanglement between partons in a strongly coupled quantum field theory
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Relativistic Particle on Light-Front
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Hamiltonian Truncation of Large $N_f$ QED and Large $N$ Vector-like Theories in $d=2+1$
A lightcone Hamiltonian method diagonalizes large-N vector-like gauge theories in 2+1 dimensions exactly, giving explicit eigenstates, spectral densities, and scattering amplitudes.
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Proton Gravitational Structure and Mass Decomposition on the Light Front
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Asymptotic gauge symmetry and UV extension of the nonperturbative coupling in holographic QCD
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Relativistic energy-momentum tensor distributions in a polarized nucleon
Relativistic EMT distributions in polarized nucleons recover good and bad light-front components in the IMF after including polarization effects.
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Distribution amplitudes of heavy-light pseudo-scalar and vector mesons from Dyson-Schwinger equations framework
First DSE predictions for B*, B*_s, and B*_c distribution amplitudes show peaks near the Euclidean constituent quark mass ratio and a universal spin ordering.
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Covariant analysis of electromagnetic current on the light cone: exposition with scalar Yukawa theory
Adding an antinucleon Fock component, even at only ~2% probability, dramatically reduces the frame dependence of the charge form factor in strongly coupled scalar Yukawa theory on the light front.
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Efficient Quantum Simulation of QCD Jets on the Light Front
A direct second-quantized qubit encoding of the light-front QCD Hamiltonian is used to classically emulate in-medium jet evolution with up to three-particle Fock states.
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Insight on confinement from the QCD effective charge
Assigning the imaginary poles of α_g1 to parton propagators produces long-distance damping e^{-Λ_s|x|/√2}|x|^{-5/2+d_a}, interpreting confinement as Green's-function suppression.
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Gluon mass and small-x dynamics in hadrons
Introduces a gluon mass and auxiliary scalar field to cancel small-x divergences in the front-form QCD Hamiltonian, yielding confinement for heavy quarks as the mass parameter is sent to zero.
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Light-front diagnostics in the 't Hooft model: I. Wave functions, EMT decomposition, and the diagonal GPD overlap
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Valence quark distribution of the pion inside a medium with finite baryon density: A Nambu--Jona-Lasinio model approach
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Weak decays of $B_s$ meson in self-consistent covariant light-front approach
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Gluon skewed generalized parton distributions of proton from a light-front Hamiltonian approach
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Strange mesons with one dynamical gluon: A light-front approach
A basis light-front QCD model with one dynamical gluon reproduces strange meson spectra and yields kaon form factors, PDFs, and Drell-Yan cross sections testable at COMPASS++/AMBER.
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Nucleon relativistic weak-neutral axial-vector four-current distributions
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A tachyonic AdS/QCD construction deforms the bulk geometry with a tachyon-dependent dielectric function to produce a unified running coupling from perturbative UV to nonperturbative IR regimes.
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An Analysis on the Parton Distribution Functions of Heavy Mesons
Light-cone quark model PDFs for kaon and heavy mesons are evolved via NLO DGLAP to predict EIC structure functions and COMPASS Drell-Yan cross sections while showing heavy constituents dominate momentum fractions.
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