  We study localization properties of fundamental fields which are coupled to
one another through the gauge mechanism both in the original Randall-Sundrum
(RS) and in the modified Randall-Sundrum (MRS) braneworld models:
scalar-vector, vector-vector, and spinor-vector configuration systems. For this
purpose we derive conditions of localization, namely the finiteness of
integrals over the extra coordinate in the action of the system considered. We
also derive field equations for each of the systems and then obtain their
solutions corresponding to the extra dimension by a separation of variable
method for every field involved in each system. We then insert the obtained
solutions into the conditions of localization to seek whether or not the
solutions are in accordance with the conditions of localization. We obtain that
not all of the configuration systems considered are localizable on the brane of
the original RS model while, on the contrary, they are localizable on the MRS
braneworld model with some restrictions. In terms of field localizability on
the brane, this result shows that the MRS model is much better than the
original RS model.
