We introduce a very simple and exactly solvable model that supports Fermi arcs in its ground state and excitation spectrum. These arcs come in pairs, and merge into what we call a pseudo Fermi surface along which fermions are gapped; this fermion gap is naturally identified as a pseudogap. Comparison will be made with phenomenology of high temperature cuprate superconductors.
@article{arxiv.2011.01680,
title = {Exactly solvable model of Fermi arcs and pseudogap},
author = {Kun Yang},
journal= {arXiv preprint arXiv:2011.01680},
year = {2021}
}