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A new Kaluza--Klein-like (KK-like) model of the de Sitter gauge theory ofgravity is constructed from the geometry related to the gauge-invariantexpressions of the gravitational fields. The model reduces to generalrelativity with a cosmological constant Lambda when the spin tensor is equal tozero. Moreover, it is shown that among the R-2Lambda+betaS^{abc}S_{abc} models,where beta is a dimensionless parameter and S_{abc} denotes torsion, theKK-like model is the only one that may avert the big-bang singularity of theRobertson--Walker universe filled with a spin fluid.

A Kaluza--Klein-like model of the gauge theory of gravity and its cosmological meaning