Simulating simplified versions of the IKKT matrix model

We simulate a supersymmetric matrix model obtained from dimensional reducti on of 4d SU(N) super Yang-Mills theory (a 4d counter part of the IKKT model or IIB matrix model). The eigenvalue distribution determines the space str ucture. The measurement of Wilson loop correlators reveals a universal larg e N scaling. Eguchi-Kawai equivalence may hold in a finite range of scale, which is also true for the bosonic case. We finally report on simulations o f a low energy approximation of the 10d IKKT model, where we omit the phase of the Pfaffian and look for evidence for a spontaneous Lorentz symmetry b reaking.