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Related papers: Moduli spaces in $p$-adic non-abelian Hodge theory

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For any two degrees coprime to the rank, we construct a family of ring isomorphisms parameterized by GSp(2g) between the cohomology of the moduli spaces of stable Higgs bundles which preserve the perverse filtrations. As consequences, we…

Algebraic Geometry · Mathematics 2021-12-15 Mark Andrea de Cataldo , Davesh Maulik , Junliang Shen , Siqing Zhang

Given a proper smooth $p$-adic variety, we show a comparison theorem for the $p$-adic Simpson correspondence constructed by Faltings and Riemann-Hilbert correspondence constructed by Scholze. As an application we formulate a sufficient…

Algebraic Geometry · Mathematics 2021-09-16 Jinbang Yang , Kang Zuo

Let $X$ be a compact connected Riemann surface and $D$ an effective divisor on $X$. Let ${\mathcal N}_H(r,d)$ denote the moduli space of $D$-twisted stable Higgs bundles (a special class of Hitchin pairs) on $X$ of rank $r$ and degree $d$.…

Algebraic Geometry · Mathematics 2019-02-14 Indranil Biswas , Marina Logares , Ana Peón-Nieto

Starting from a homogeneous affine Springer fiber $Fl_{\psi}$, we construct three moduli spaces that correspond to the Dolbeault, de Rham and Betti aspects of a hypothetical Simpson correspondence with wild ramifications. We show that…

Algebraic Geometry · Mathematics 2022-09-30 Roman Bezrukavnikov , Pablo Boixeda Alvarez , Michael McBreen , Zhiwei Yun

We introduce a version of the P=W conjecture relating the Borel-Moore homology of the stack of representations of the fundamental group of a genus g Riemann surface with the Borel-Moore homology of the stack of degree zero semistable Higgs…

Algebraic Geometry · Mathematics 2024-04-05 Ben Davison

We consider the moduli space of vector bundles of rank $n$ and degree $ng$ over a fixed Riemann surface of genus $g\geq 2$. We use the explicit parametrization in terms of the Tyurin data. In the moduli space there is a "non-abelian" Theta…

Algebraic Geometry · Mathematics 2024-03-01 Marco Bertola , Chaya Norton , Giulio Ruzza

The non-abelian Hodge correspondence identifies complex variations of Hodge structures with certain Higgs bundles. In this work we analyze this relationship, and some of its ramifications, when the variations of Hodge structures are…

Algebraic Geometry · Mathematics 2020-09-23 Murad Alim , Florian Beck , Laura Fredrickson

The cherry on top of this stacky paper is the following: for any g>1 we give a finite group G such that the moduli space of connected admissible G-covers of genus g is a smooth, fine moduli space, which is a Galois cover of the moduli space…

Algebraic Geometry · Mathematics 2007-05-23 Dan Abramovich , Alessio Corti , Angelo Vistoli

We place the representation variety in the broader context of abelian and nonabelian cohomology. We outline the equivalent constructions of the moduli spaces of flat bundles, of smooth integrable connections, and of holomorphic integrable…

Algebraic Geometry · Mathematics 2014-04-22 Eugene Z. Xia

We introduce real structures on $L$-twisted Higgs pairs over a compact Riemann surface equipped with an anti-holomorphic involution, and prove a Hitchin--Kobayashi correspondence for them. Real $G$-Higgs bundles, where $G$ is a real form of…

Differential Geometry · Mathematics 2020-10-28 Indranil Biswas , Luis Angel Calvo , Oscar Garcia-Prada

Let $X$ be a complex smooth projective variety, and $\mathcal{G}$ a locally free sheaf on $X$. We show that there is a 1-to-1 correspondence between pairs $(\Lambda,\Xi)$, where $\Lambda$ is a sheaf of almost polynomial filtered algebras…

Algebraic Geometry · Mathematics 2012-03-23 Pietro Tortella

The nonabelian Hodge correspondence (Corlette-Simpson correspondence), between the polystable Higgs bundles with vanishing Chern classes on a compact K\"ahler manifold $X$ and the completely reducible flat connections on $X$, is extended to…

Algebraic Geometry · Mathematics 2022-09-26 Indranil Biswas , Sorin Dumitrescu

We establish a method for calculating the Poincar\'e series of moduli spaces constructed as quotients of smooth varieties by suitable non-reductive group actions; examples of such moduli spaces include moduli spaces of unstable vector or…

Algebraic Geometry · Mathematics 2021-05-11 Eloise Hamilton

Let $X$ be a smooth complex elliptic curve and $G$ a connected reductive affine algebraic group defined over $\mathbb C$. Let ${\mathcal M}_X(G)$ denote the moduli space of topologically trivial algebraic $G$--connections on $X$, that is,…

Algebraic Geometry · Mathematics 2015-04-09 Indranil Biswas

In this article we give a new proof of Ng\^o's Geometric Stabilisation Theorem, which implies the Fundamental Lemma. This is a statement which relates the cohomology of Hitchin fibres for a quasi-split reductive group scheme $G$ to the…

Algebraic Geometry · Mathematics 2019-10-29 Michael Groechenig , Dimitri Wyss , Paul Ziegler

Let $\Sigma$ be a closed surface, $G$ a compact Lie group, with Lie algebra $g$, and $\xi \colon P \to \Sigma$ a principal $G$-bundle. In earlier work we have shown that the moduli space $N(\xi)$ of central Yang- Mills connections, for…

dg-ga · Mathematics 2008-02-03 Johannes Huebschmann

In this paper we study the geometry of the moduli space of (non-strongly) parabolic Higgs bundles over a Riemann surface with marked points. We show that this space possesses a Poisson structure, extending the one on the dual of an Atiyah…

Algebraic Geometry · Mathematics 2010-12-22 Marina Logares , Johan Martens

We define Hitchin's moduli space for a principal bundle $P$, whose structure group is a compact semisimple Lie group $K$, over a compact non-orientable Riemannian manifold $M$. We use the Donaldson-Corlette correspondence, which identifies…

Differential Geometry · Mathematics 2018-09-13 Nan-Kuo Ho , Graeme Wilkin , Siye Wu

Let $k$ be an algebraic closure of finite fields with odd characteristic $p$ and a smooth projective scheme $\mathbf{X}/W(k)$. Let $\mathbf{X}^0$ be its generic fiber and $X$ the closed fiber. For $\mathbf{X}^0$ a curve Faltings conjectured…

Algebraic Geometry · Mathematics 2013-11-22 Guitang Lan , Mao Sheng , Kang Zuo

The non-abelian Hodge correspondence is a real analytic map between the moduli space of stable Higgs bundles and the deRham moduli space of irreducible flat connections mediated by solutions to the self-duality equations. In this paper we…

Differential Geometry · Mathematics 2025-04-04 Lynn Heller , Sebastian Heller , Martin Traizet