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@article{faucris.263641704,
abstract = {Every unitary involutive solution of the quantum Yang-Baxter equation (R-matrix) defines an extremal character and a representation of the infinite symmetric group S∞. We give a complete classification of all such Yang-Baxter characters and determine which extremal characters of S∞ are of Yang-Baxter form. Calling two involutive R-matrices equivalent if they have the same character and the same dimension, we show that equivalence classes can be parameterized by pairs of Young diagrams, and construct an explicit normal form R-matrix for each class. Using operator-algebraic techniques (subfactors), we prove that two R-matrices are equivalent if and only if they have similar partial traces. Furthermore, we describe the algebraic structure of the set of equivalence classes of all involutive R-matrices, and discuss several families of examples. These include unitary Yang-Baxter representations of the Temperley-Lieb algebra at loop parameter δ=2, which can be completely classified in terms of their trace and dimension.},
author = {Lechner, Gandalf and Pennig, Ulrich and Wood, Simon},
doi = {10.1016/j.aim.2019.106769},
faupublication = {no},
journal = {Advances in Mathematics},
keywords = {Representations of infinite symmetric groups; Subfactors; Yang-Baxter equations},
note = {CRIS-Team Scopus Importer:2021-09-07},
peerreviewed = {Yes},
title = {{Yang}-{Baxter} representations of the infinite symmetric group},
volume = {355},
year = {2019}
}