2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/54201A perturbative technique, the low-temperature expansion, is developed for matrix models of random surfaces. It can be applied to models with arbitrary target spaces, including ones with c>1. As a simple illustration, the series is worked out to 10th order for the surface coupled to a q-state Potts model. Accurate estimates for, e.g., $γ_{str}$ are obtained both in the low q (c<1) and high q (branched polymer) regimes, including the logarithmic corrections to scaling.31 pages, uuencoded Postscript (also available at http://parthe.lpthe.jussieu.fr/~wexler/ )High Energy Physics - TheoryHigh Energy Physics - Latticetext