English

Generalizations of the $Q$-prime curvature via renormalized characteristic forms

Differential Geometry 2023-09-07 v3 Complex Variables

Abstract

The QQ-prime curvature is a local pseudo-Einstein invariant on CR manifolds defined by Case and Yang, and Hirachi. Its integral, the total QQ-prime curvature, gives a non-trivial global CR invariant. On the other hand, Marugame has constructed a family of global CR invariants via renormalized characteristic forms, which contains the total QQ-prime curvature. In this paper, we introduce a generalization of the QQ-prime curvature for each renormalized characteristic form, and show that its integral coincides with Marugame's CR invariant. We also study generalizations of the critical CR GJMS operator and the PP-prime operator, which are related to the transformation laws of our new curvatures under conformal change.

Keywords

Cite

@article{arxiv.2210.05855,
  title  = {Generalizations of the $Q$-prime curvature via renormalized characteristic forms},
  author = {Yuya Takeuchi},
  journal= {arXiv preprint arXiv:2210.05855},
  year   = {2023}
}

Comments

28 pages, final version