GLSMs for gerbes (and other toric stacks)

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Publication:2508680

DOI10.4310/ATMP.2006.V10.N1.A4zbMATH Open1119.14038arXivhep-th/0502053MaRDI QIDQ2508680

Author name not available (Why is that?)

Publication date: 20 October 2006

Published in: (Search for Journal in Brave)

Abstract: In this paper we will discuss gauged linear sigma model descriptions of toric stacks. Toric stacks have a simple description in terms of (symplectic, GIT) quotients of homogeneous coordinates, in exactly the same form as toric varieties. We describe the physics of the gauged linear sigma models that formally coincide with the mathematical description of toric stacks, and check that physical predictions of those gauged linear sigma models exactly match the corresponding stacks. We also check in examples that when a given toric stack has multiple presentations in a form accessible as a gauged linear sigma model, that the IR physics of those different presentations matches, so that the IR physics is presentation-independent, making it reasonable to associate CFT's to stacks, not just presentations of stacks. We discuss mirror symmetry for stacks, using Morrison-Plesser-Hori-Vafa techniques to compute mirrors explicitly, and also find a natural generalization of Batyrev's mirror conjecture. In the process of studying mirror symmetry, we find some new abstract CFT's, involving fields valued in roots of unity.


Full work available at URL: https://arxiv.org/abs/hep-th/0502053



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