  An equivalence between Born-Infeld and effective real scalar field theories
for brane structures is built in some specific warped space-time scenarios.
Once the equations of motion for tachyon fields related to the Born-Infeld
action are written as first-order equations, a simple analytical connection
with a particular class of real scalar field superpotentials can be found. This
equivalence leads to the conclusion that, for a certain class of
superpotentials, both systems can support identical thick brane solutions as
well as brane structures described through localized energy densities,
$T_{00}(y)$, in the $5^{th}$ dimension, $y$. Our results indicate that thick
brane solutions realized by the Born-Infeld cosmology can be connected to real
scalar field brane scenarios which can be used to effectively map the tachyon
condensation mechanism.
