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DONALDSON-THOMAS TRANSFORMATION OF DOUBLE BRUHAT CELLS IN SEMISIMPLE LIE GROUPS

机译:唐纳森 - 托马斯在半动李群体中的双Bruhat细胞转化

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Double Bruhat cells G~(u,v) were first studied by Fomin and Zelevinsky [8]. They provide important examples of cluster algebras [1] and cluster Poisson varieties [5]. Cluster varieties produce examples of 3d Calabi-Yau categories with stability conditions, and their Donaldson-Thomas invariants, defined by Kontsevich and Soibelman [15], are encoded by a formal automorphism on the cluster variety known as the Donaldson-Thomas transformation. Goncharov and Shen conjectured in [11] that for any semisimple Lie group G, the Donaldson-Thomas transformation of the cluster Poisson variety HG~(u,v)/H is a slight modification of Fomin and Zelevinsky's twist map [8]. In this paper we prove this conjecture, using crucially Fock and Goncharov's cluster ensembles [7] and the amalgamation construction [5]. Our result, combined with the work of Gross, Hacking, Keel, and Kontsevich [12], proves the duality conjecture of Fock and Goncharov [7] in the case of HG~(u,v)/H.
机译:首先由Fomin和Zelevinsky [8]研究双Bruhat细胞G〜(U,V)。 它们提供集群代数[1]和群泊松品种的重要例子[5]。 群集品种产生3D Calabi-yau类别,具有稳定性条件,他们的唐纳森 - 托马斯不变性由Kontsevich和Soibelman [15]定义,由群集多种被称为Donaldson-Thomas转换的正式自动形式编码。 Goncharov和Shen在[11]中猜测,对于任何半动谎座G组,Donaldson-Thomas的簇子种类H G〜(U,V)/ h是对Fomin和Zelevinsky的扭曲地图的轻微修改[8] 。 在本文中,我们通过Cruciente Fock和GonCharov的集群合奏来证明这一猜想[7]和合并结构[5]。 我们的结果,结合毛重,黑客,龙骨和kontsevich [12]的工作,证明了福克和Goncharov的二元猜测[7]在h g〜(u,v)/ h的情况下。

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