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Deformations of reducible SL(n,C) repres...
Kozai, Kenji...
Deformations of reducible SL(n,C) representations of fibered 3-manifold groups by Kozai, Kenji ( Author )
N.A
24-09-2015
Let Mϕ be a surface bundle over a circle with monodromy ϕ:S→S. We study deformations of certain reducible representations of π1(Mϕ) into SL(n,C), obtained by composing a reducible representation into SL(2,C) with the irreducible representation SL(2,C)→SL(n,C). In particular, we show that under certain conditions on the eigenvalues of ϕ∗, the reducible representation is contained in a (n+1+k)(n−1) dimensional component of the representation variety, where k is the number of components of ∂Mϕ. This result applies to mapping tori of pseudo-Anosov maps with orientable invariant foliations whenever 1 is not an eigenvalue of the induced map on homology, where the reducible representation is also a limit of irreducible representations.
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http://arxiv.org/abs/1509.07487
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