English

A class of minimal submanifolds in spheres

Differential Geometry 2016-03-10 v1

Abstract

We introduce a class of minimal submanfolds MnM^n, n3n\geq 3, in spheres Sn+2\mathbb{S}^{n+2} that are ruled by totally geodesic spheres of dimension n2n-2. If simply-connected, such a submanifold admits a one-parameter associated family of equally ruled minimal isometric deformations that are genuine. As for compact examples, there are plenty of them but only for dimensions n=3n=3 and n=4n=4. In the first case, we have that M3M^3 must be a S1\mathbb{S}^1-bundle over a minimal torus T2T^2 in S5\mathbb{S}^5 and in the second case M4M^4 has to be a S2\mathbb{S}^2-bundle over a minimal sphere S2\mathbb{S}^2 in S6\mathbb{S}^6. In addition, we provide new examples in relation to the well-known Chern-do Carmo-Kobayashi problem since taking the torus T2T^2 to be flat yields a minimal submanifolds M3M^3 in S5\mathbb{S}^5 with constant scalar curvature.

Keywords

Cite

@article{arxiv.1603.02803,
  title  = {A class of minimal submanifolds in spheres},
  author = {Marcos Dajczer and Theodoros Vlachos},
  journal= {arXiv preprint arXiv:1603.02803},
  year   = {2016}
}