Rational K-matrices and representations of twisted Yangians
Abstract
Description
We describe the twisted Yangians Y(g,h) which arise as boundary remnants of Yangians Y(g) in 1+1D integrable field theories. We describe and extend our recent construction of the intertwiners of their representations (the rational boundary S- or 'K'-matrices) and perform a case-by-case analysis for all pairs (g,h), giving the h-decomposition of Y(g,h)-representations where possible.
16 pages. v3 has minor corrections and updates, and more detail on Casimir normalizations
16 pages. v3 has minor corrections and updates, and more detail on Casimir normalizations