“…[4][5][6][7][8]. Other recently investigated aspects of hyperbolic lattices include hyperbolic band theory [9,10] and crystallography [11], non-Abelian Bloch states [10,[12][13][14][15], periodic boundary conditions [10,[16][17][18][19]] and the thermodynamic limit [18][19][20], Hofstadter spectra [8,[21][22][23], effects of strong correlations [17,[24][25][26], continuum approximation [27], exact trace formulas [28], elastic vibrations [29], flat bands [1,[30][31][32][33], connections to holography [34][35][36][37][38], and higher-order topological phenomena [39,40]. It is by now established that hyperbolic lattices exhibit single-particle dynamics and many-body phenomena richly distinct from those observed in Euclidean lattices.…”