TY - JOUR
T1 - Cyclotomic discriminantal arrangements and diagram automorphisms of Lie algebras
AU - Varchenko, Alexander
AU - Young, Charles A. S.
N1 - This is a pre-copyedited, author-produced version of an article accepted for publication in International Mathematical Research Notices following peer review. Under embargo. Embargo end date: 25 September 2018.
The version of record is available online at: https://doi.org/10.1093/imrn/rnx225.
PY - 2017/9/25
Y1 - 2017/9/25
N2 - Recently a new class of quantum integrable models, the cyclotomic Gaudin models, were described in arXiv:1409.6937, arXiv:1410.7664. Motivated by these, we identify a class of affine hyperplane arrangements that we call cyclotomic discriminantal arrangements. We establish correspondences between the flag and Aomoto complexes of such arrangements and chain complexes for nilpotent subalgebras of Kac-Moody type Lie algebras with diagram automorphisms. As a byproduct, we show that the Bethe vectors of cyclotomic Gaudin models associated to diagram automorphisms are nonzero.
AB - Recently a new class of quantum integrable models, the cyclotomic Gaudin models, were described in arXiv:1409.6937, arXiv:1410.7664. Motivated by these, we identify a class of affine hyperplane arrangements that we call cyclotomic discriminantal arrangements. We establish correspondences between the flag and Aomoto complexes of such arrangements and chain complexes for nilpotent subalgebras of Kac-Moody type Lie algebras with diagram automorphisms. As a byproduct, we show that the Bethe vectors of cyclotomic Gaudin models associated to diagram automorphisms are nonzero.
KW - math.QA
UR - https://doi.org/10.1093/imrn/rnx225
U2 - 10.1093/imrn/rnx225
DO - 10.1093/imrn/rnx225
M3 - Article
SN - 1073-7928
VL - 2019
SP - 3376
EP - 3458
JO - International Mathematical Research Notices
JF - International Mathematical Research Notices
IS - 11
M1 - rnx225
ER -