63 citations · 273 across the 17 of their papers we have counts for
17 papers
N Delta - Transition Form Factors at Low Momentum Transfer
G. C. Gellas, T. R. Hemmert, C. N. Ktorides +1
The three complex form factors entering the vertex are calculated to in the framework of a chiral effective theory with explicit (1232) degrees of…
Chiral symmetry and the Delta-Nucleon transition form factors
G. C. Gellas, T. R. Hemmert, C. N. Ktorides +1
The three complex form factors entering the vertex are calculated to in the framework of a chiral effective theory with explicit Δ(1232) degrees of f…
Deconfinement at finite chemical potential
A. Bender, G. I. Poulis, C. D. Roberts +2
In a confining, renormalisable, Dyson-Schwinger equation model of two-flavour QCD we explore the chemical-potential dependence of the dressed-quark propagator, which provides a mea…
Scaling and confinement aspects of tadpole improved SU(2) lattice gauge theory and its abelian projection
G. I. Poulis
Using a tadpole improved SU(2) gluodynamics action, the nonabelian potential and the abelian potential after the abelian projection are computed. Rotational invariance is found res…
Parity-violating quasifree electron-deuteron scattering in a covariant approach
G. I. Poulis
The role of relativistic corrections associated with lower Dirac components of the deuteron wavefunction, is examined for parity-violating (PV) electron scattering. The relation be…
Relativistic effects in parity-violating electron- deuteron scattering and strangeness in the nucleon
G. I. Poulis
Deuteron electrodisintegration is described in a relativistic PWIA framework. The reduction to the factorized PWIA, and the effect thereof on the observables accessible in parity-v…
Abelian dominance and adjoint color sources
Grigorios I. Poulis
Abelian dominance in the case of color sources in the fundamental representation is shown to follow from certain properties of maximal abelian projected SU(2) gauge theory. The pos…
Sidewise dispersion relations and the structure of the nucleon vertex
R. M. Davidson, G. I. Poulis
We revisit sidewise dispersion relations as a method to relate the nucleon off-shell form factor to observable quantities, namely the meson-nucleon scattering phase shifts. It is s…
Abelian dominance and adjoint sources in lattice QCD
Grigorios I. Poulis
Certain properties of maximal abelian projection are derived which suggest that the fundamental and adjoint SU(2) string tensions are reproduced by singly and doubly charged abelia…
``GLUELUMP'' SPECTRUM AND ADJOINT SOURCE POTENTIAL IN LATTICE QCD
Grigorios I. Poulis, Howard D. Trottier
We calculate the potential between ``quarks'' which are in the adjoint representation of SU(2) color in the three-dimensional lattice theory. We work in the scaling region of the t…
On the Dirac quantization condition
G. I Poulis, P. J. Mulders
We revisit the Dirac quantization condition for string-like and string-less (but multi-valued) magnetic monopole potentials. In doing so we allow for an {\it a priori} different co…
On the screening of the potential between adjoint sources in
Grigorios I. Poulis, Howard D. Trottier
We calculate the potential between adjoint sources in pure gauge theory in three dimensions. We investigate whether the potential saturates at large separations due to the…
Interference Effects in Relativistic Deuteron Electrodisintegration
G. I. Poulis, T. W. Donnelly
We extend the relativistic plane--wave impulse approximation formalism to incorporate a specific class of relativistic interference effects for use in describing inclusive electrod…
Gauge Fixing and Extended Abelian Monopoles in SU(2) Gauge Theory in 2+1 Dimensions
G. I. Poulis, Howard D. Trottier, R. M. Woloshyn
Extended Abelian monopoles are investigated in SU(2) lattice gauge theory in three dimensions. Monopoles are computed by Abelian projection in several gauges, including the maximal…
Polarized Deformed Nuclei Studied via Coincidence Polarized Electron Scattering: The case of 21 Ne
J. A. Caballero, T. W. Donnelly, G. I. Poulis +2
Coincidence reactions of the type $\svec{A}(\svec{e},e'N)B$ involving the scattering of polarized electrons from deformed polarized targets are discussed within the context of the…
Effective Hamiltonians with Relativistic Corrections II: Application to Compton Scattering by a Proton
S. Scherer, G. I. Poulis, H. W. Fearing
We discuss two different methods of obtaining ``effective Hamiltonians'' of the electromagnetic interaction which include relativistic corrections. One is the standard…
Effective Hamiltonians with Relativistic Corrections I: The Foldy--Wouthuysen transformation versus the direct Pauli reduction
H. W. Fearing, G. I. Poulis, S. Scherer
Two different methods of obtaining ``effective Hamiltonians'' which include relativistic corrections to nonrelativistic calculations are discussed, the standard Foldy--…