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One-Parameter Indecomposable and Irreducible Representations of gl(2 | 1) Superalgebra

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Abstract

Using inhomogeneous boson–fermion realization, one-parameter indecomposable and irreducible representations of the gl(2 | 1) superalgebra are studied on subspace and quotient spaces of the universal enveloping algebra of Heisenberg–weyl superalgebra. All the finite-dimensional irreducible representations of one-parameter of the gl(2 | 1) superalgebra are naturally obtained as special cases. The parameter has relation to the Hubbard interaction parameter U in the Hubbard model for correlated electrons.

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Chen, YQ. One-Parameter Indecomposable and Irreducible Representations of gl(2 | 1) Superalgebra. International Journal of Theoretical Physics 40, 1249–1258 (2001). https://doi.org/10.1023/A:1017575604884

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