Today's #arXivsummary: https://arxiv.org/abs/2302.04877 by Aksoy et. al. Authors ask whether it is possible to obtain single odd higher-order singularities in the dispersion of an electronic system. Types of instabilities that can occur for isolated singularities could potentially lead to non-Fermi liquid behavior; such odd singularities occur once time-reversal symmetry is broken. Shown in Haldane model example with staggered chemical potential. #CondMat #StrEl #arXiv_2302_04877