  We study four dimensional large-N SU(N) Yang-Mills theory coupled to adjoint
overlap fermions on a single site lattice. Lattice simulations along with
perturbation theory show that the bare quark mass has to be taken to zero as
one takes the continuum limit in order to be in the physically relevant
center-symmetric phase. But, it seems that it is possible to take the continuum
limit with any renormalized quark mass and still be in the center-symmetric
physics. We have also conducted a study of the correlations between Polyakov
loop operators in different directions and obtained the range for the Wilson
mass parameter that enters the overlap Dirac operator.
