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• W3104613798 startingPage "006" @default.
• W3104613798 abstract "We construct two quantum spin chains Hamiltonians with quantum sl(2|1) invariance. These spin chains define variants of the Hubbard model and describe electron models with pair hoppings. A cubic algebra that admits the Birman-Wenzl-Murakami algebra as a quotient allows exact solvability of the periodic chain. The two Hamiltonians, respectively built using the distinguished and the fermionic bases of U_q(sl(2|1)) differ only in the boundary terms. They are actually equivalent, but the equivalence is non local. Reflection equations are solved to get exact solvability on open chains with non trivial boundary conditions. Two families of diagonal solutions are found. The centre and the Scasimirs of the quantum enveloping algebra of sl(2|1) appear as tools for the construction of exactly solvable Hamiltonians." @default.
• W3104613798 created "2020-11-23" @default.
• W3104613798 creator A5001315214 @default.
• W3104613798 date "1997-12-22" @default.
• W3104613798 modified "2023-09-29" @default.
• W3104613798 title "Algebraic approach to q-deformed supersymmetric variants of the Hubbard model with pair hoppings" @default.
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• W3104613798 doi "https://doi.org/10.1088/1126-6708/1997/12/006" @default.
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