Semistable Higgs bundles and representations of algebraic fundamental groups in mixed characteristics
Yanhong Yang (Mainz)
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When 
Nov 14, 2013 from 03:15 pm to 04:15 pm 
Where  Mainz, 05432 (Hilbertraum) 
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Abstract. I first introduce the project of LanShengZuo on the construction of representations from semistable Higgs bundle over curves in characteristic p, particularly, the functor from the category of periodic Higgs bundles to that of representations. Then I show that on a generic curve, the rank2 Higgs bundles (L+ L^1, \theta) with \theta to be an isomorphism is a peoridic Higgs bundle of period 1 (up to 2torsion line bundles).