This talk provides an overview of recent results for two- and three-nucleon systemsobtained within the framework of the Covariant Spectator Theory. The main featuresof two recently published models for the neutron-proton interaction, that fit the 2007 worlddata base containing several thousands of neutron-proton scattering data below 350 MeVwith chi^2/Ndata ≈ 1, are presented. These one-boson-exchange models, called WJC-1 andWJC-2, have a considerably smaller number of adjustable parameters than are present inrealistic nonrelativistic potentials. When applied to the three-nucleon bound state, the correctbinding energy is obtained without additional three-body forces. First calculations ofthe electromagnetic form factors of helium-3 and the triton in complete impulse approximationalso give very reasonable results. One can conclude that the Covariant SpectatorTheory yields a very efficient description of few-nucleon systems, in which the relativisticformulation of the dynamics is an essential element.
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