English

Para-Sasaki-like Riemannian manifolds and new Einstein metrics

Differential Geometry 2021-05-21 v2

Abstract

We extract a new class of paracontact paracomplex Riemannian manifolds arising from certain cone construction, call it para-Sasaki-like Riemannian manifold and give explicit examples. We define a hyperbolic extension of a paraholomorphic paracomplex Riemannian manifold, which is a local product of two Riemannian spaces with equal dimensions, showing that it is a para-Sasaki-like Riemannian manifold. If the starting paraholomorphic paracomplex Riemannian manifold is complete Einstein with negative scalar curvature then its hyperbolic extension is a complete Einstein para-Sasaki-like Riemannian manifold with negative scalar curvature thus producing new examples of complete Einstein Riemannian manifold with negative scalar curvature.

Keywords

Cite

@article{arxiv.2008.04163,
  title  = {Para-Sasaki-like Riemannian manifolds and new Einstein metrics},
  author = {Stefan Ivanov and Hristo Manev and Mancho Manev},
  journal= {arXiv preprint arXiv:2008.04163},
  year   = {2021}
}

Comments

15 pages, v2: added completeness of the metric