Free Field Realisation of the Chiral Universal Centraliser.

Free Field Realisation of the Chiral Universal Centraliser.
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DOI:
10.1007/s00023-023-01305-1
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发表时间:
2023
影响因子:
1.5
通讯作者:
Nair, Sujay
Nair, Sujay
中科院分区:
物理与天体物理3区
文献类型:
--
作者:
Beem, Christopher;Nair, Sujay

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在摩尔-立川的TQFT形式主义中,用于描述类理论的希格斯分支,与未穿孔球相关联的空间类型是万有中心化器,其中。用更物理的术语来说,这个空间是三维纯规范理论的库仑分支,它具有规范群,即朗兰兹对偶。在描述类的手征代数的类似形式中,与球面相关的顶点代数被称为手征通用中心化子。在本文中,我们构造了一个开放的,辛嵌入从覆盖的Kostant-Toda型格的G-推广的经典结果的泛中心化子。使用这种嵌入和一些观察的泊松代数结构,我们提出了一个自由场实现的手征通用中心的任何简单的群G。我们利用这一实现开发自由场实现的手征代数类的理论与穿刺属零。这些实现使广义S-对偶完全显现,并且对穿刺的推广在概念上是清楚的,尽管技术上是繁重的。
In the TQFT formalism of Moore–Tachikawa for describing Higgs branches of theories of class , the space associated to the unpunctured sphere in type is the universal centraliser , where . In more physical terms, this space arises as the Coulomb branch of pure gauge theory in three dimensions with gauge group , the Langlands dual. In the analogous formalism for describing chiral algebras of class , the vertex algebra associated to the sphere has been dubbed the chiral universal centraliser. In this paper, we construct an open, symplectic embedding from a cover of the Kostant–Toda lattice of type to the universal centraliser of G—extending a classic result of Kostant. Using this embedding and some observations on the Poisson algebraic structure of , we propose a free field realisation of the chiral universal centraliser for any simple group G. We exploit this realisation to develop free field realisations of chiral algebras of class of type for theories of genus zero with punctures. These realisations make generalised S-duality completely manifest, and the generalisation to punctures is conceptually clear, though technically burdensome.
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