4 papers
Electron-electron bound states in parity-preserving QED_3 applied to high-T_c cuprate superconductors
H. R. Christiansen, O. M. DelCima, M. M. Ferreira +1
We consider a parity-preserving QED_3 model with spontaneous breaking of the gauge symmetry as a framework for the evaluation of the electron-electron interaction potential underly…
Low-energy electron-electron bound states in planar QED
H. R. Christiansen, O. M. Del Cima, M. M. Ferreira +1
In this talk, we present a parity-preserving QED3 model with spontaneous breaking of a local U(1)-symmetry. The breaking is accomplished by a potential of the phi^6-type. It is sho…
Hadronic fluctuations and quark-antiquark asymmetry in the nucleon
H. R. Christiansen, J. Magnin
We derive the nucleon non-perturbative sea-quark distributions coming from a composite model involving quarks and hadronic degrees of freedom. The model predicts a definite structu…
Bogomol'nyi equations in gauge theories
M. S. Cunha, H. R. Christiansen, C. A. S. Almeida
By imposing self-duality conditions, we obtain the explicit form in which gauge theories spontaneously breakdown in the Bogomol'nyi limit. In this context, we reconsider the Abelia…