Dirichlet Green kernel estimates and Sobolev-type inequalities for twisted differential forms

Abstract

We study the full-trace Dirichlet realization of the Dolbeault Laplacian on differential forms with values in a Hermitian holomorphic vector bundle over a relatively compact smooth domain in a Kähler manifold. We prove global Green kernel estimates that are uniform up to the boundary, including one- and two-boundary-factor bounds and estimates for the \(\bar\partial\)- and \(\bar\partial^*\)-derivatives. These estimates yield Sobolev-type inequalities with boundary terms. In real dimension two, the first-order bound has a logarithmic loss. In top antiholomorphic degree, we obtain quantitative \(L^r\)-to-\(L^k\) solvability for \(\bar\partial\) without pseudoconvexity. Analogous results hold for the twisted de Rham complex of a flat metric connection on a compact Riemannian manifold with smooth boundary.

arXiv admin note: text overlap with arXiv:2409.19353