TY  - JOUR
PB  - SciPost Foundation
DO  - 10.21468/SciPostPhys.15.2.071
TI  - A range three elliptic deformation of the Hubbard model
PY  - 2023/08/28
UR  - https://www.scipost.org/SciPostPhys.15.2.071
JF  - SciPost Physics
JA  - SciPost Phys.
VL  - 15
IS  - 2
SP  - 071
A1  - de Leeuw, Marius
AU  - Paletta, Chiara
AU  - Pozsgay, Balázs
AB  - In this paper we present a new integrable deformation of the Hubbard model. Our deformation gives rise to a range 3 interaction term in the Hamiltonian which does not preserve spin or particle number. This is the first non-trivial medium range deformation of the Hubbard model that is integrable. Our model can be mapped to a new integrable nearest-neighbour model via a duality transformation. The resulting nearest-neighbour model also breaks spin conservation. We compute the $R$-matrices for our models, and find that there is a very unusual dependence on the spectral parameters in terms of the elliptic amplitude.
ER  -

@Article{10.21468/SciPostPhys.15.2.071,
	title={{A range three elliptic deformation of the Hubbard model}},
	author={Marius de Leeuw and Chiara Paletta and Balázs Pozsgay},
	journal={SciPost Phys.},
	volume={15},
	pages={071},
	year={2023},
	publisher={SciPost},
	doi={10.21468/SciPostPhys.15.2.071},
	url={https://scipost.org/10.21468/SciPostPhys.15.2.071},
}