Twisted Yangian symmetry of the open Hubbard model
classification
✦ hep-th
cond-mat.str-elmath.QA
keywords
yangianhubbardmodelopensymmetrytwistedassociatedboundary
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We show that, in the open Hubbard model with integrable boundary conditions, the bulk Yangian symmetry is broken to a twisted Yangian. We prove that the associated charges commute with the Hamiltonian and the reflection matrix, and that they form a coideal subalgebra.
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