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$(d,\sigma)$-twisted Affine-Virasoro superalgebras

Representation Theory 2025-07-02 v1 Quantum Algebra Rings and Algebras

Abstract

For any finite dimensional Lie superalgebra g˙\dot{\mathfrak{g}} (maybe a Lie algebra) with an even derivation dd and a finite order automorphism σ\sigma that commutes with dd, we introduce the (d,σ)(d,\sigma)-twisted Affine-Virasoro superalgebra L=L(g˙,d,σ)\mathfrak{L}=\mathfrak{L}(\dot{\mathfrak{g}},d,\sigma) and determine its universal central extension L^=L^(g˙,d,σ)\hat{\mathfrak{L}}=\hat{\mathfrak{L}}(\dot{\mathfrak{g}},d,\sigma). This is a huge class of infinite-dimensional Lie superalgebras. Such Lie superalgebras consist of many new and well-known Lie algebras and superalgebras, including the Affine-Virasoro superalgebras, the twisted Heisenberg-Virasoro algebra, the mirror Heisenberg-Virasoro algebra, the W-algebra W(2,2)W(2,2), the gap-pp Virasoro algebras, the Fermion-Virasoro algebra, the N=1N=1 BMS superalgebra, the planar Galilean conformal algebra. Then we give the classification of cuspidal ALA\mathfrak{L}-modules by using the weighting functor from U(h)U(\mathfrak{h})-free modules to weight modules. Consequently, we give the classification of simple cuspidal L\mathfrak{L}-modules by using the AA-cover method. Finally, all simple quasi-finite modules over L\mathfrak{L} and L^\hat{\mathfrak{L}} are classified. Our results recover many known Lie superalgebra results from mathematics and mathematical physics, and give many new Lie superalgebras.

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Cite

@article{arxiv.2507.00349,
  title  = {$(d,\sigma)$-twisted Affine-Virasoro superalgebras},
  author = {Rencai Lü and Xizhou You and Kaiming Zhao},
  journal= {arXiv preprint arXiv:2507.00349},
  year   = {2025}
}

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31 pages