Jv. Mikhailova, PROBLEM ON SINGLE HOLE IN THE 2-DIMENSIONAL HUBBARD-MODEL WITH INFINITE REPULSION, Physica. C, Superconductivity, 282, 1997, pp. 1715-1716
The energy spectrum and wave functions are studied for an NxN cluster
in a system with one hole and one flipped spin. The calculation is mad
e for given values of the total quasimomentum <(alpha)over right arrow
> of the system. A system of four nonlinear algebraic equations for de
termining the energy levels of the system is obtained The analysis is
restricted to the simplest case alpha(x)=alpha(y)=(0,pi).