2016/08/26 by Voroshilov, Valentin
#FOS: Physical sciences #General Physics (physics.gen-ph)
paper · doi:10.48550/arxiv.1609.07981
A new model with a new Hamiltonian is offered as the means for studying properties of a system of strongly correlated electrons. Consideration of the simplest possible situation, namely a system on non-interacting electrons in a two-leg ladder, leads to an expression for the excitation energy spectrum with no energy gap at the half-filling and with an energy gap away from the half filling.