Colber G. Oliveira

• A model field theory in five dimensions
• Bound states for spin 1/2 particles in general relativity
• Gauge transformations and the relativistic invariance of electrodynamics
• Long range interactions and the geometry of the four-dimensional space
• On the complex two-dimensional internal space in general relativity
• The second Noether theorem for local field theories
• [Pion]-e decay and the universal Fermi interaction