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Abstract: We present a complete derivation of two-particle states of theone-dimensional extended Hubbard model involving attractive or repulsiveon-site and nearest-neighbour interactions. We find that this system possessesscattering resonances and two families of energy-dependent interaction-boundstates which are not present in the Hubbard model with the on-site interactionalone.



Autor: Manuel Valiente, David Petrosyan

Fuente: https://arxiv.org/







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