  We study braneworld models in the presence of auxiliary fields. We use the
first-order framework to investigate several distinct possibilities, where the
standard braneworld scenario changes under the presence of the parameter that
controls the auxiliary fields introduced to modify Einstein's equation. The
results add to previous ones, to show that the minimal modification that we
investigate contributes to change quantitatively the thick braneworld profile,
although no new qualitative effect is capable of being induced by the minimal
modification here considered.
