2010/10/31 by Vladimir Kazakov, Sebastien Leurent, Zengo Tsuboi
Physics and Astronomy · Mathematics · #math-ph #cond-mat.stat-mech #hep-th #math.MP #nlin.SI
paper · pdf · doi:10.1007/s00220-012-1428-9
published as Commun. Math. Phys. 311 (2012) 787-814 · 31 pages, 2 figures ; v2 : a few explanations and appendices added, a new concise proof of the master identity presented ; v3 : a few minor typos corrected
arxiv created 2012/04/16 · arxiv updated 2012/04/18
We propose the operatorial form of Baxter's TQ-relations in a general form of the operatorial Bäcklund flow describing the nesting process for the inhomogeneous rational gl(K|M) quantum (super)spin chains with twisted periodic boundary conditions. The full set of Q-operators and T-operators on all levels of nesting is explicitly defined. The results are based on a generalization of the identities among the group characters and their group co-derivatives with respect to the twist matrix, found by one of the authors and P.Vieira [V.Kazakov and P.Vieira, JHEP 0810 (2008) 050 [arXiv:0711.2470]]. Our formalism, based on this new "master" identity, allows a systematic and rather straightforward derivation of the whole set of nested Bethe ansatz equations for the spectrum of quantum integrable spin chains, starting from the R-matrix.