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arXiv · 2302.09599

Biharmonic Riemannian submersions from a 3-dimensional BCV space

Ze-Ping Wang·Ye-Lin Ou
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Abstract

BCV spaces are a family of 3-dimensional Riemannian manifolds which include six of Thurston's eight geometries. In this paper, we give a complete classification of proper biharmonic Riemannian submersions from a 3-dimensional BCV space by proving that such biharmonic maps exist only in the cases of $H^2\times\mathbb{R}\to \mathbb{R}^2$ or $\widetilde{SL}(2,\mathbb{R})\to \mathbb{R}^2$. In each of these two cases, we are able to construct a family of infinitely many proper biharmonic Riemannian submersions. Our results on one hand, extend a previous result of the authors which gave a complete classification of proper biharmonic Riemannian submersions from a 3-dimensional space form, and on the other hand, can be viewed as the dual study of biharmonic surfaces (i.e., biharmonic isometric immersions) in a BCV space studied in some recent literature.

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Ze-Ping Wang, Ye-Lin Ou. 2023-11-26. Biharmonic Riemannian submersions from a 3-dimensional BCV space. https://arxiv.org/abs/2302.09599

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