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In this paper I shall consider various possible scalar-vector-tensor fieldtheories which might be used to describe the Universe. After imposing numerousconstraints of a physical and mathematical nature on the theories underconsideration, we shall see that there still exists a plethora of viabletheories from which to choose. But hopefully I shall be able to convince youthat a scalar-vector-tensor field theory involving five scalar fields providesa promising cosmological model. The advantage of this theory is that there isno energy-momentum tensor for the matter fields, nor arbitrary functions, onlydimensionless constants, that need to be determined. I shall also construct themost general multiple-scalar-vector-tensor field theory which is dimensionallyconsistent and free of dimensioned constants. It turns out that this fieldtheory yields second-order field equations.

Using Dimensional Analysis to Construct Multiple-Scalar-Vector-Tensor Cosmological Field Theories