Classification of Homogeneous Willmore Surfaces in $S^N$
Classification of Homogeneous Willmore Surfaces in $S^N$
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DOI:
10.18910/77231
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发表时间:
2018-05
期刊:
影响因子:
--
通讯作者:
J. Dorfmeister;Pengfu Wang
中科院分区:
文献类型:
--
作者:
J. Dorfmeister;Pengfu Wang
In this note we consider homogeneous Willmore surfaces in $S^{n+2}$. The main result is that a homogeneous Willmore two-sphere is conformally equivalent to a homogeneous minimal two-sphere in $S^{n+2}$, i.e., either a round two-sphere or one of the Bor\r{u}vka-Veronese 2-spheres in $S^{2m}$. This entails a classification of all Willmore $\mathbb{C} P^1$ in $S^{2m}$. As a second main result we show that there exists no homogeneous Willmore upper-half plane in $S^{n+2}$ and we give, in terms of special constant potentials, a simple loop group characterization of all homogeneous surfaces which have an abelian transitive group.