The existence of a quantum phase transition in a Hubbard model on a quasi-one-dimentional two-leg ladder
arXiv:1312.3218
Abstract
A canonical transformation of a new type is offered as the mean for studying properties of a system of strongly correlated electrons. As an example of the utility of the transformation, it is used to demonstrate the existence of a quantum phase transition in a Hubbard-like model on a quasi-one- dimensional two-leg ladder.
arXiv comment5 pages