Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1858957 | Physics Letters A | 2016 | 9 Pages |
Abstract
We study the algebraic structure of an integrable Hubbard-Shastry type lattice model associated with the centrally extended su(2|2) superalgebra. This superalgebra underlies Beisert's AdS/CFT worldsheet R-matrix and Shastry's R-matrix. The considered model specializes to the one-dimensional Hubbard model in a certain limit. We demonstrate that Yangian symmetries of the R-matrix specialize to the Yangian symmetry of the Hubbard model found by Korepin and Uglov. Moreover, we show that the Hubbard model Hamiltonian has an algebraic interpretation as the so-called secret symmetry. We also discuss Yangian symmetries of the A and B models introduced by Frolov and Quinn.
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Physical Sciences and Engineering
Physics and Astronomy
Physics and Astronomy (General)
Authors
Marius de Leeuw, Vidas Regelskis,