Today's #arXivsummary: https://arxiv.org/abs/2304.04787 by Zhao, La Nave, & Phillips. Authors find the Hatsugai-Kohmoto model as a stable quartic fixed point via computation of the β−function in the presence of perturbing local interactions. Agreement with Hubbard arises because both models break the Z2 symmetry on a Fermi surface. #CondMat #StrEl #arXiv_2304_04787