Multi-parametric R-matrix for the sl(2|1) Yangian
Abstract
We study the Yangian of the sl(2|1) Lie superalgebra in a multi-parametric four-dimensional representation. We use Drinfeld's second realization to independently rederive the R-matrix, and to obtain the antiparticle representation, the crossing and the unitarity condition. We consistently apply the Yangian antipode and its inverse to the individual particles involved in the scattering. We explicitly find a scalar factor solving the crossing and unitarity conditions, and study the analytic structure of the resulting dressed R-matrix. The formulas we obtain bear some similarities with those familiar from the study of integrable structures in the AdS/CFT correspondence, although they present obvious crucial differences.
Cite
@article{arxiv.1202.5405,
title = {Multi-parametric R-matrix for the sl(2|1) Yangian},
author = {Andrei Babichenko and Alessandro Torrielli},
journal= {arXiv preprint arXiv:1202.5405},
year = {2015}
}
Comments
25 pages, LaTeX, no figures; v2: typos corrected, minor changes, added pole analysis of the dressed R-matrix; v3: clarifications added, typos corrected, references added; v4: typos corrected, minor changes, version to appear in J. Math. Phys