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I discuss the subject of powerlike asymptotic behavior of hadronic form factors in pre-QCD analyses of soft (Feynman/Drell-Yan) and hard (West) mechanisms, and also recent derivation of $1/Q^2$ asymptotics of meson form factors in AdS/QCD.…

High Energy Physics - Phenomenology · Physics 2010-02-16 A. Radyushkin

We compute the spectrum of light hadrons in a holographic dual of QCD defined on $AdS_5 \times S^5$ which has conformal behavior at short distances and confinement at large interquark separation. Specific hadrons are identified by the…

High Energy Physics - Theory · Physics 2009-09-11 Guy F. de Teramond , Stanley J. Brodsky

Several physical quantities of light hadrons are examined by a new holographic model of QCD, which is the modified version of the one proposed by Erlich et al. defined on AdS${}_5$. In our model, AdS${}_5$ is deformed by a non-trivial bulk…

High Energy Physics - Phenomenology · Physics 2009-11-11 Kazuo Ghoroku , Nobuhito Maru , Motoi Tachibana , Masanobu Yahiro

Holographic quantum field theories that confine in flat space, are considered on a fixed AdS space. The space of holographic solutions for such theories is constructed and three types of regular solutions are found. Theories with two AdS…

High Energy Physics - Theory · Physics 2024-09-05 Ahmad Ghodsi , Elias Kiritsis , Francesco Nitti

The new light-front coupled-cluster (LFCC) method for the nonperturbative solution of Hamiltonian eigenvalue problems is described and then illustrated in an application to quantum electrodynamics. The method eliminates any necessity for a…

High Energy Physics - Phenomenology · Physics 2012-03-02 S. S. Chabysheva , J. R. Hiller

We consider ($d+n+1$)-dimensional solutions of Einstein gravity with constant negative curvature. Regular solutions of this type are expected to be dual to the ground states of ($d+n$)-dimensional holographic CFTs on $AdS_d\times S^n$.…

High Energy Physics - Theory · Physics 2023-11-23 Ahmad Ghodsi , Elias Kiritsis , Francesco Nitti

An effective supersymmetric QCD light-front Hamiltonian for hadrons composed of light quarks, which includes a spin-spin interaction between the hadronic constituents, is constructed by embedding superconformal quantum mechanics into AdS…

High Energy Physics - Phenomenology · Physics 2016-07-05 Stanley J. Brodsky , Guy F. de Téramond , Hans Gunter Dosch , Cédric Lorcé

This brief review presents the key components of light-front holographic quantum chromodynamics (HLFQCD). Particular attention is given to the introduction of the QCD color confinement scale within the context of a graded superconformal…

High Energy Physics - Phenomenology · Physics 2025-10-24 Hans Guente Dosch , Guy F. de Teramond , Stanley J. Brodsky

Heisenberg's matrix formulation of quantum mechanics can be generalized to relativistic systems by evolving in light-front time tau = t+z/c. The spectrum and wavefunctions of bound states, such as hadrons in quantum chromodynamics, can be…

High Energy Physics - Theory · Physics 2015-06-26 Stanley J. Brodsky

Atomic physics and hadronic physics are both governed by the Yang Mills gauge theory Lagrangian; in fact, Abelian quantum electrodynamics can be regarded as the zero-color limit of quantum chromodynamics. I review a number of areas where…

High Energy Physics - Phenomenology · Physics 2015-06-23 Stanley J. Brodsky

We observe that the linear potential used as a leading approximation for describing color confinement in the instant form of dynamics corresponds to a quadratic confining potential in the front form of dynamics. In particular, the…

High Energy Physics - Phenomenology · Physics 2014-10-22 Arkadiusz P. Trawiński , Stanisław D. Głazek , Stanley J. Brodsky , Guy F. de Téramond , Hans Günter Dosch

We employ an effective Hamiltonian that includes the transverse and longitudinal confinement and the one-gluon exchange interaction with fixed coupling constant. By solving the eigenvalue equation in basis light-front quantization (BLFQ),…

High Energy Physics - Phenomenology · Physics 2020-09-07 Siqi Xu , Chandan Mondal , Jiangshan Lan , Xingbo Zhao , Yang Li , James P. Vary

We present our recent progress in applying the basis light-front quantization approach to investigate the nucleon's structure. We solve its wave functions from the eigenstates of the light-front QCD Hamiltonian using a fully relativistic,…

High Energy Physics - Phenomenology · Physics 2025-03-28 Chandan Mondal , Siqi Xu , Yiping Liu , Jiangshan Lan , Yang Li , Xingbo Zhao , James P. Vary

A general strategy is described for deriving a constituent approximation to QCD, inspired by the constituent quark model and based on light-front quantization. Some technical aspects of the approach are discussed, including a mechanism for…

High Energy Physics - Theory · Physics 2007-05-23 Kenneth G. Wilson , David G. Robertson

We consider a new approach towards constructing approximate holographic duals of QCD from experimental hadron properties. This framework allows us to derive a gravity dual which reproduces the empirically found linear square-mass…

High Energy Physics - Phenomenology · Physics 2008-11-26 Hilmar Forkel , Michael Beyer , Tobias Frederico

We show the 't Hooft Equation and the light-front holographic Schr\"odinger Equation are complementary to each other in governing the transverse and longitudinal dynamics of colour confinement in quark-antiquark mesons. Together, they…

High Energy Physics - Phenomenology · Physics 2021-11-03 Mohammad Ahmady , Harleen Dahiya , Satvir Kaur , Chandan Mondal , Ruben Sandapen , Neetika Sharma

Light front formalism for composite systems is presented. Derivation of equations for bound state and scattering problems are given. Methods of constructing of elastic form factors and scattering amplitudes of composite particles are…

High Energy Physics - Theory · Physics 2008-11-26 V. R. Garsevanishvili , A. A. Khelashvili , Z. R. Menteshashvili , M. S. Nioradze

We study the gravitational form factors of the proton and some of its mechanical properties. We use a holographic model based on the AdS/CFT correspondence, in which a deformation in the anti-de Sitter background geometry is considered. By…

High Energy Physics - Phenomenology · Physics 2026-05-26 Ayrton Nascimento , Henrique Boschi-Filho

We study a subsector of the AdS_4/CFT_3 correspondence where a class of solutions in the bulk and on the boundary can be explicitly compared. The bulk gravitational theory contains a conformally coupled scalar field with a Phi^4 potential,…

High Energy Physics - Theory · Physics 2010-02-03 Sebastian de Haro , Anastasios C. Petkou

The electromagnetic elastic form factors of pseudoscalar and vector mesons are analyzed for space-like momentum transfers in terms of relativistic quark models based on the Hamiltonian light-front formalism elaborated in different reference…

Nuclear Theory · Physics 2009-11-07 Silvano Simula