2 papers
cond-mat.mes-hall2021
Effect Of Coulomb Interactions on The Amplitude Of Persistent Currents In One Dimensional Disordered Mesoscopic Metallic Rings
R. O. Okanigbuan, K. N. Onaiwu, S. Ehika
Persistent current is a small but perpetual electric current that flows in metallic rings in the absence of any applied source. We compute the persistent currents of one-dimensiona…
cond-mat.str-el2021
Ground State Properties Of The One-Dimensional Hubbard Model: Symmetry Projected Variational Wave Function Approach
Robinson O. Okanigbuan, Kingsley N. Onaiwu
We use the symmetry group of the 4-site Hubbard model to construct a ground state variational wave function of two- and four interacting electrons. In the limit $U\rightar…