2026-07-072026-07-07http://salesiana.dossiersoluciones.com/handle/123456789/154736We have investigated the formation of bound state of two electrons in different kind of lattices using a t-J-U model.M.Sc. Thesis. Supervised by Dr. Saurabh Basu, IIT Guwahati, IndiaStrongly Correlated Electronstext