2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/116317By expressing the Holstein-Primakoff transformation in a symmetric form a modified spin-polaron technique utilized on triangular-lattice antiferromagnet is developed. With the technique, we have treated an extended t-J model, calculated the quasiparticle dispersion, and we also compared the the dispersion with that obtained by other method.10 pagesMathematical PhysicsAstrophysicsStrongly Correlated ElectronsSuperconductivityQuantum Physics78T33text