97 citations · 292 across the 16 of their papers we have counts for
5 papers · 1 filter
Covariance of Light-Front Models: Pair Current
J. P. B. C de Melo, T. Frederico, H. W. L. Naus +1
We compute the "+" component of the electromagnetic current of a composite spin-one two-fermion system for vanishing momentum transfer component . In particular, we ex…
Pion Eletromagnetic Current in the Ligth-Cone Formalism
J. P. B. C. de Melo, H. W. L. Naus, T. Frederico
The electromagnetic form factor of the pion is calculated in a pseudoscalar field theoretical model which constituent quarks. We extract the form factor using the "+" component of…
Ward-Takahashi Identidy on the Ligth-Front
H. W. L. Naus, J. P. B. C de Melo, T. Frederico
The Ward-Takahashi identity, reflecting local gauge invariance, is perturbatively verified for a boson model in light front field theory. A careful integration over the light front…
Effective Hamiltonian for Scalar Theories in the Gaussian Approximation
H. W. L. Naus, T. Gasenzer, H. --J. Pirner
We use a Gaussian wave functional for the ground state to reorder the Hamiltonian into a free part with a variationally determined mass and the rest. Once spontaneous symmetry brea…
Effective light front quantization of scalar field theories and two-dimensional electrodynamics
E. V. Prokhvatilov, H. W. L. Naus, H. --J. Pirner
We introduce a new method to include condensates in the light-cone Hamiltonian. By using a Gaussian approximation to the ordinary vacuum in a theory close to the light front, we de…