Twisted Quasimaps and Symplectic Duality for Hypertoric Spaces Arxiv
Twisted Quasimaps and Symplectic Duality for Hypertoric Spaces Michael McBreen[1,2], Artan Sheshmani[1,2,3], Shing-Tung Yau[1,4] May 5, 2020 To the memory of Thomas Andrew Nevins (June 14, 1971–February 01, 2020) Abstract We study moduli spaces of twisted quasimaps to a hypertoric variety X, arising as the Higgs branch of an abelian supersymmetric gauge theory in three dimensions. These parametrise general quiver representations whose building blocks are maps between rank one sheaves on P1, subject to a stability condition, associated to the quiver, involving both the sheaves and the maps. We show that the singular coho- mology of these moduli spaces is naturally identified with the Ext group of a pair of holonomic modules over the ‘quantized loop space’ of X, which we view as a Higgs branch for a related theory with infinitely many matter fields. We construct the coulomb branch of this theory, and find that it is a periodic analogue of the coulomb branch associated to X. Using the formalism of symplectic duality, we de- rive an expression for the generating function of twisted quasimap invariants in terms of the character of a certain tilting module on the periodic coulomb branch. We give a closed formula for this generating function when X arises as the abelianisation of the N-step flag quiver. MSC codes: 14N35, 14M25, 14J33, 53D30, 53D55 Keywords: Higgs branch, Coulomb branch, Symplectic resolutions, Symplectic du- arXiv:2004.04508v3 [math.AG] 1 May 2020 ality, Koszul duality, N-step flag quivers, Quantization, Refined quasimap invariants Contents 1 Introduction2 1.1 Acknowledgements .
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