Preformed Pairs, SU(2) Slave-boson Theory, and High T_c Superconductors

Ching-Long Wu, Chung-Yu Mou, Xiao-Gang Wen +1

A preformed-pair model was considered. The quantum disordered phase of the d-wave superconducting state was obtained by turning on an on-site repulsion. The low energy effective th…