Central Charges and U(1 ) R Symmetries in N=1 Super Yang-Mills
Abstract
We use recent results of Intriligator and Wecht [hep-th/0304128] to study the phase structure of $\NN=1$ super Yang-Mills theory with gauge group
SU(
N
c
)
, a chiral superfield in the adjoint, and
N
f
chiral superfields in the fundamental representation of the gauge group. Our discussion sheds new light on [hep-th/0304128] and supports the conjecture that the central charge
a
decreases under RG flows and is non-negative in unitary four dimensional conformal field theories.