6 papers · 1 filter
Hidden Symmetry and Georgi's Vector Limit
H. B. O'Connell, A. G. Williams
We study the generation of vector meson masses in the Hidden Local Symmetry (HLS) model of low energy QCD. After demoting the HLS to a hidden global symmetry (HGS), the rho is expl…
Lattice calculation of the gluon propagator and the strangeness magnetic moment of the nucleon
A. G. Williams
This contribution summarizes a presentation combining two topics in lattice QCD. Firstly, the gluon propagator in Landau gauge is calculated in quenched QCD on a large (32^3x64) la…
New results in vector meson dominance and rho meson physics
A. G. Williams
Recent results by Benayoun et al. comparing the predictions of a range of existing models based on the Vector Meson Dominance hypothesis are summarized and discussed. These are com…
Near-threshold Isospin Violation in the Pion Form Factor from Chiral Perturbation Theory
H. B. O'Connell, K. Maltman, A. W. Thomas +1
We examine the isospin violation in the timelike pion form factor near threshold at next-to-leading order in the chiral expansion using the techniques of Chiral Perturbation Theory…
Covariant Solutions of the Bethe-Salpeter Equation
A. G. Williams, K. Kusaka, K. M. Simpson
There is a need for covariant solutions of bound state equations in order to construct realistic QCD based models of mesons and baryons. Furthermore, we ideally need to know the st…
Dyson-Schwinger equations and their application to nonperturbative field theory
F. T. Hawes, K. Kusaka, A. G. Williams
Two examples of recent progress in applications of the Dyson-Schwinger equation (DSE) formalism are presented: (1) Strong coupling quantum electrodynamics in 4 dimensions (QED)…