English

The asymptotic of curvature of direct image bundle associated with higher powers of a relatively ample line bundle

Differential Geometry 2021-05-12 v5

Abstract

Let π:XM\pi:\mathcal{X}\to M be a holomorphic fibration with compact fibers and LL a relatively ample line bundle over X\mathcal{X}. We obtain the asymptotic of the curvature of L2L^2-metric and Qullien metric on the direct image bundle π(LkKX/M)\pi_*(L^k\otimes K_{\mathcal{X}/M}) up to the lower order terms than kn1k^{n-1} for large kk. As an application we prove that the analytic torsion τk(ˉ)\tau_k(\bar{\partial}) satisfies ˉlog(τk(ˉ))2=o(kn1)\partial\bar{\partial}\log(\tau_k(\bar{\partial}))^2=o(k^{n-1}), where nn is the dimension of fibers.

Keywords

Cite

@article{arxiv.1712.05922,
  title  = {The asymptotic of curvature of direct image bundle associated with higher powers of a relatively ample line bundle},
  author = {Xueyuan Wan and Genkai Zhang},
  journal= {arXiv preprint arXiv:1712.05922},
  year   = {2021}
}

Comments

This preprint has been accepted by Geometriae Dedicata, and the final authenticated version will be available online at Springer Link https://link.springer.com/article/10.1007%2Fs10711-021-00625-y