Symmetry-resolved entanglement in a long-range free-fermion chain

We investigate the symmetry resolution of entanglement in presence long-range couplings. To this end, we study symmetry-resolved entropy ground state a fermionic chain that has dimerised hoppings with power-like decaying amplitude -- generalisation Su-Schrieffer-Heeger model. This is system preserves number particles. The each sector calculated via charged moments reduced density matrix. exploit some recent results on block Toeplitz determinants generated by discontinuous symbol to obtain analytically asymptotic behaviour and entropies for large subsystem. At leading order find equipartition, but comparing short-range counterpart its breaking occurs at different it does depend hopping amplitudes.