中文

$\mathcal{W}^k(\mathfrak{sl}_4, f_{\text{subreg}})$-代数的陪集

表示论 2020-05-13 v1 量子代数

摘要

Wk(sl4,fsubreg)\mathcal {W}^k(\mathfrak{sl}_4, f_{\text {subreg}})为对应于sl4\mathfrak{sl}_4及其亚正则幂零元的泛W\mathcal{W}-代数,并设Wk(sl4,fsubreg)\mathcal {W}_k(\mathfrak{sl}_4, f_{\text {subreg}})为其单商。存在一个Heisenberg子代数H\mathcal{H},我们以Ck\mathcal{C}^k记陪集Com(H,Wk(sl4,fsubreg))\text{Com}(\mathcal{H}, \mathcal {W}^k(\mathfrak{sl}_4, f_{\text {subreg}})),并以Ck\mathcal{C}_k记其单商。我们证明对于k=4+(m+4)/3k=-4+(m+4)/3,其中mm为大于22的整数且m+1m+133互素,Ck\mathcal{C}_k同构于一个有理正则W\mathcal W-代数W(slm,freg)\mathcal{W}(\mathfrak{sl}_m, f_{\text{reg}})。特别地,Wk(sl4,fsubreg)\mathcal{W}_k(\mathfrak{sl}_4, f_{\text {subreg}})W(slm,freg)\mathcal{W}(\mathfrak{sl}_m, f_{\text{reg}})与秩一格点顶点算子代数的张量积的简单电流扩张,因而是有理的。

关键词

引用

@article{arxiv.1711.11109,
  title  = {Cosets of the $\mathcal{W}^k(\mathfrak{sl}_4, f_{\text{subreg}})$-algebra},
  author = {Thomas Creutzig and Andrew R. Linshaw},
  journal= {arXiv preprint arXiv:1711.11109},
  year   = {2020}
}

备注

14 pages, to appear in conference proceedings for AMS Special Session on Vertex Algebras and Geometry