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Centralizer construction of the Yangian of the queer Lie superalgebra

Representation Theory 2007-05-23 v1 Quantum Algebra

Abstract

Consider the complex matrix Lie superalgebra glNNgl_{N|N} with the standard generators EijE_{ij} where i,j=N,...,1,1,...,Ni,j=-N,...,-1,1,...,N. Define an involutive automorphism η\eta of glNNgl_{N|N} by η(Eij)=Ei,j\eta(E_{ij})=E_{-i,-j}. The queer Lie superalgebra qNq_N is the fixed point subalgebra in glNNgl_{N|N} relative to the automorphism η\eta. Consider the twisted polynomial current Lie superalgebra g={X(t)\glNN[t]:η(X(t))=X(t)}g=\{X(t)\in\gl_{N|N}[t]:\eta(X(t))=X(-t)\}. The enveloping algebra U(g)U(g) of the Lie superalgebra gg has a deformation, called the Yangian of qNq_N. For each M=1,2,...M=1,2,... denote by ANMA_N^M the centralizer of qMqN+Mq_M\subset q_{N+M} in the superalgebra U(qN+M)U(q_{N+M}). We describe the projective limit of the sequence of centralizer algebras AN1,AN2,...A_N^1,A_N^2,... in terms of the Yangian of qNq_N.

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Cite

@article{arxiv.math/0404086,
  title  = {Centralizer construction of the Yangian of the queer Lie superalgebra},
  author = {Maxim Nazarov and Alexander Sergeev},
  journal= {arXiv preprint arXiv:math/0404086},
  year   = {2007}
}

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24 pages