  Use of the AdS/CFT correspondence to arrive at phenomenological gauge field
theories is discussed, focusing on the orbifolded case without supersymmetry.
An abelian orbifold with the finite group Z_p can give rise to a G = U(N)^p
gauge group with chiral fermions and complex scalars in different
bi-fundamental representations of G. The naturalness issue is discussed,
particularly the absence of quadratic divergences in the scalar propagator at
one loop. This requires that the scalars all be in bi-fundamentals with no
adjoints, coincident with the necessary and sufficient condition for presence
of chiral fermions. Speculations are made concerning new gauge and matter
particles expected soon to be pursued experimentally at the LHC.
