Renormalizable non-renormalizable theories
arXiv:0909.3348
Abstract
The general prescription for constructing the continuum limit of a field theory is introduced. We then apply the prescription to construct the O(N) non-linear sigma model and the Gross-Neveu model in three dimensions using the large N expansions. We compare these non-linear models with the linearized models, and show the equivalence.
28 pages, 8 figures, added Ref. 3, typos in Appendix B.2 corrected