2 papers
cond-mat.str-el1998
The half-filled Hubbard chain in the Composite Operator Method: A comparison with Bethe Ansatz
M. M. Sanchez, A. Avella, F. Mancini
The one-dimensional Hubbard model at half-filling is studied in the framework of the Composite Operator Method using a static approximation. A solution characterized by strong anti…
cond-mat.str-el1998
The N-Chain Hubbard model in the Composite Operator Method
A. Avella, F. Mancini, M. M. Sanchez +1
We propose a theoretical framework to describe the ladder systems. The N-chain Hubbard model has been studied within the Composite Operator Method. In this scheme of calculations t…