# New exactly solvable model of strongly correlated electrons motivated by high-Tc superconductivity.

@article{Essler1992NewES, title={New exactly solvable model of strongly correlated electrons motivated by high-Tc superconductivity.}, author={Essler and Korepin and Schoutens}, journal={Physical review letters}, year={1992}, volume={68 19}, pages={ 2960-2963 } }

We present a new model describing strongly correlated electrons on a general {ital d}-dimensional lattice. It is an extended Hubbard model and it contains the {ital t}-{ital J} model as a special case. The model naturally describes local electron pairs, which can move coherently at arbitrary momentum. By using an {eta}-pairing mechanism we can construct eigenstates of the Hamiltonian with off-diagonal long-range order. In the attractive case the exact ground state is superconducting in any…

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