Abstract
Consider a gauge singlet superfield S coupled to a pair of adjoint fields in a SUSY-GUT. If the tree-level vacuum is flat in S, the vev <S> which defines the GUT scale will be determined via dimensional transmutation at a scale M where the soft-breaking (mass)^2 vanishes as a result of running from
M
Pl
=(8π
G
N
)
−1/2
. Because of the large number of adjoint fields
N
A
coupled to S, one finds that M can be generically close to
M
GUT
=2×
10
16
GeV
:
M≃
M
Pl
exp[−16
π
2
log(3/2)/(
N
A
+4)
λ
2
]
, where
λ
is a Yukawa
∼
0.7. This work examines the symmetries and dynamical constraints required in a SUSY-GUT in order that the desired flatness in S is achieved, and that this flatness may survive in a supergravity framework.