Cartan subalgebras for quantum symmetric pair coideals
Cartan subalgebras for quantum symmetric pair coideals
复制标题
量子对称对余理想的嘉当子代数
DOI:
10.1090/ert/523
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发表时间:
2017
期刊:
影响因子:
--
通讯作者:
G. Letzter
中科院分区:
文献类型:
--
作者:
G. Letzter
There is renewed interest in the coideal subalgebras used to form quantum symmetric pairs because of recent discoveries showing that they play a fundamental role in the representation theory of quantized enveloping algebras. However, there is still no general theory of finite-dimensional modules for these coideals. In this paper, we establish an important step in this direction: we show that every quantum symmetric pair coideal subalgebra admits a quantum Cartan subalgebra which is a polynomial ring that specializes to its classical counterpart. The construction builds on Kostant and Sugiura’s classification of Cartan subalgebras for real semisimple Lie algebras via strongly orthogonal systems of positive roots. We show that these quantum Cartan subalgebras act semisimply on finite-dimensional unitary modules and identify particularly nice generators of the quantum Cartan subalgebra for a family of examples.
DOI:
10.1515/crelle-2016-0012
发表时间:
2015-07
期刊:
Journal für die reine und angewandte Mathematik (Crelles Journal)
影响因子:
--
作者:
M. Balagovic;S. Kolb
通讯作者:
M. Balagovic;S. Kolb
DOI:
10.4171/owr/2015/10
发表时间:
2015
期刊:
Oberwolfach Reports
影响因子:
--
作者:
Heckenberger I
通讯作者:
Heckenberger I