Functional renormalization of spinless triangular-lattice fermions: N-patch vs. truncated-unity schemeNico Gneist, Dominik Kiese, Ravn Henkel, Ronny Thomale, Laura Classen and Michael M. SchererEur. Phys. J. B, 95 9 (2022) 157DOI: https://doi.org/10.1140/epjb/s10051-022-00395-w