A generalization of anisotropic lattices to include a 2+2 discretization is discussed. As a part of this program, we determine the one-loop correction to the gluon self-energy and analyse the restoration of Lorentz invariance in on-shell states for both the 2+2 and 3+1 cases. A 2+2 Wilson-like fermion action is also considered.
@article{arxiv.hep-lat/0309058,
title = {The 2+2 anisotropic Wilson gluon action with applications},
author = {Giuseppe Burgio and Alessandra Feo and Mike Peardon and Sinead M. Ryan},
journal= {arXiv preprint arXiv:hep-lat/0309058},
year = {2007}
}