Asymptotics of spectral function of lower energy forms and Bergman kernel of semi-positive and big line bundles

Abstract

In this paper we study the asymptotic behaviour of the spectral function corresponding to the lower part of the spectrum of the Kodaira Laplacian on high tensor powers of a holomorphic line bundle. This implies a full asymptotic expansion of this function on the set where the curvature of the line bundle is non-degenerate. As application we obtain the Bergman kernel asymptotics for adjoint semi-positive line bundles over complete Kaehler manifolds, on the set where the curvature is positive. We also prove the asymptotics for big line bundles endowed with singular Hermitian metrics with strictly positive curvature current. In this case the full asymptotics holds outside the singular locus of the metric.

71 pages; v.2 is a final update to agree with the published paper

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• Convergence speed of weighted Bergman kernels towards extremal functions
• Bergman kernel asymptotics for singular metrics on punctured Riemann surfaces
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• Asymptotics of G-equivariant Szegő kernels
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