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Article overview
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A range three elliptic deformation of the Hubbard model | Marius de Leeuw
; Chiara Paletta
; Balázs Pozsgay
; | Date: |
4 Jan 2023 | Abstract: | 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. | Source: | arXiv, 2301.01612 | Services: | Forum | Review | PDF | Favorites |
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