  The Hubbard model with large orbital degeneracy has recently gained relevance
in the context of ultracold earth alkali like atoms. We compute its static
properties in the SU(2M) symmetric limit for up to M=8 bands at half filling
within dynamical mean-field theory, using the numerically exact multigrid
Hirsch-Fye quantum Monte Carlo approach. Based on this unbiased data, we
establish scaling laws which predict the phase boundaries of the paramagnetic
Mott metal-insulator transition at arbitrary orbital degeneracy M with high
accuracy.
