paper

Sum of Lyapunov exponents of the Hodge bundle with respect to the Teichmuller geodesic flow

arXiv:1112.5872 · doi:10.1007/s10240-013-0060-3

Abstract

We compute the sum of the positive Lyapunov exponents of the Hodge bundle with respect to the Teichmuller geodesic flow. The computation is based on the analytic Riemann-Roch Theorem and uses a comparison of determinants of flat and hyperbolic Laplacians when the underlying Riemann surface degenerates.

Minor corrections. To appear in Publications mathematiques de l'IHES

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