English

Small Elliptic Quantum Group $e_{tau,\gamma}(sl_N)$

Quantum Algebra 2007-05-23 v2 Representation Theory

Abstract

The small elliptic quantum group eτ,γ(slN)e_{\tau,\gamma}(sl_N), introduced in the paper, is an elliptic dynamical analogue of the universal enveloping algebra U(sln)U(sl_n). We define highest weight modules, Verma modules and contragradient modules over eτ,γ(slN)e_{\tau,\gamma}(sl_N), the dynamical Shapovalov form for eτ,γ(slN)e_{\tau,\gamma}(sl_N) and the contravariant form for highest weight eτ,γ(slN)e_{\tau,\gamma}(sl_N)-modules. We show that any finite-dimensional slNsl_N-module and any Verma module over slNsl_N can be lifted to the corresponding eτ,γ(slN)e_{\tau,\gamma}(sl_N)-module on the same vector space. For the elliptic quantum group Eτ,γ(slN)E_{\tau,\gamma}(sl_N) we construct the evaluation morphism Eτ,γ(slN)eτ,γ(slN)E_{\tau,\gamma}(sl_N)\to e_{\tau,\gamma}(sl_N), thus making any eτ,γ(slN)e_{\tau,\gamma}(sl_N)-module into an evaluation Eτ,γ(slN)E_{\tau,\gamma}(sl_N)-module.

Keywords

Cite

@article{arxiv.math/0011145,
  title  = {Small Elliptic Quantum Group $e_{tau,\gamma}(sl_N)$},
  author = {V. Tarasov and A. Varchenko},
  journal= {arXiv preprint arXiv:math/0011145},
  year   = {2007}
}

Comments

34 pages, amstex.tex (ver. 2.1), misprints are corrected