We introduce a Cellular Dynamical Cluster Approximation (CDCA) to study the nature of the Mott insulator-metal transition in the extended Hubbard model on a square lattice. At strong coupling, a d-wave Mott insulator is obtained. Hole doping drives a first order Mott transition to a non-Fermi (nFL) liquid metal. Remarkably, this nFL is caused by an Anderson orthogonality catastrophe at low energies due to the non-trivial competition between strong, non-local interactions and hopping. This constitutes the first explicit realisation of Anderson's Luttinger liquid idea in two dimensions. Many experimental responses in the ``strange metal'' phase found around optimal doping in cuprates are understood naturally within our approach.
@article{arxiv.cond-mat/0701585,
title = {Mott Transition and Strange Metal in Two Dimensions: A View from Cellular Dynamical Cluster Approximation},
author = {Mukul S. Laad and Luis Craco},
journal= {arXiv preprint arXiv:cond-mat/0701585},
year = {2007}
}