2001
DOI: 10.1016/s0764-4442(01)02069-9
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Representations of the fundamental group of a surface in and holomorphic triples

Abstract: Abstract. We count the connected components in the moduli space of PU(p, q)-representations of the fundamental group for a closed oriented surface. The components are labelled by pairs of integers which arise as topological invariants of the flat bundles associated to the representations. Our results show that for each allowed value of these invariants, which are bounded by a Milnor-Wood type inequality, there is a unique non-empty connected component. Interpreting the moduli space of representations as a modu… Show more

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Cited by 10 publications
(11 citation statements)
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“…Now, for this twisted quiver bundle one can consider the general quiver equations. Although they only coincide with Hitchin's equations (6.1) for a particular choice of the parameters, it turns out that the other values are very important to study the topology of the moduli of representations of π 1 (X) into U(p, q) [BGG1].…”
Section: Twisted Quiver Sheaves and Path Algebrasmentioning
confidence: 94%
See 1 more Smart Citation
“…Now, for this twisted quiver bundle one can consider the general quiver equations. Although they only coincide with Hitchin's equations (6.1) for a particular choice of the parameters, it turns out that the other values are very important to study the topology of the moduli of representations of π 1 (X) into U(p, q) [BGG1].…”
Section: Twisted Quiver Sheaves and Path Algebrasmentioning
confidence: 94%
“…Here, the quiver has two vertices, say 1 and 2, and two arrows, a : 1 → 2 and b : 2 → 1, and the twisting bundle associated to each arrow is the holomorphic tangent bundle. These are studied in [BGG1,BGG2].…”
Section: Introductionmentioning
confidence: 99%
“…[3,4,16,17,20,S.B. Bradlow et al, in preparation] for details.• G = SU(n, n): An SU(n, n)-Higgs bundle over X is defined by a 4-tuple (V, W, β, γ ) consisting of two holomorphic vector bundles V and W of rank n such that det W = (det V) −1 , and homomorphisms β : W −→ V ⊗ K and γ : V −→ W ⊗ K.…”
mentioning
confidence: 99%
“…After the completion of this paper, S. Bradlow, O. Garcia-Prada and P. Gothen announced that all moduli spaces of flat PU(p, q)-structures with fixed Chern class and Toledo invariant, are connected [3].…”
Section: Introduction and Resultsmentioning
confidence: 99%