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Yamabe solitons and gradient Yamabe solitons on three-dimensional N(k)-contact manifolds
International Journal of Geometric Methods in Modern Physics ( IF 1.8 ) Pub Date : 2020-08-16 , DOI: 10.1142/s0219887820501777
Young Jin Suh 1 , Uday Chand De 2
Affiliation  

If a three-dimensional [Formula: see text]-contact metric manifold [Formula: see text] admits a Yamabe soliton of type [Formula: see text], then the manifold has a constant scalar curvature and the flow vector field [Formula: see text] is Killing. Furthermore, either [Formula: see text] has a constant curvature [Formula: see text] or the flow vector field [Formula: see text] is a strict contact infinitesimal transformation. Also, we prove that if the metric of a three-dimensional [Formula: see text]-contact metric manifold [Formula: see text] admits a gradient Yamabe soliton, then either the manifold is flat or the scalar curvature is constant. Moreover, either the potential function is constant or the manifold is of constant sectional curvature [Formula: see text]. Finally, we have given an example to verify our result.

中文翻译:

三维 N(k) 接触流形上的 Yamabe 孤子和梯度 Yamabe 孤子

如果一个三维 [公式:见文本]-接触度量流形 [公式:见文本] 承认 [公式:见文本] 类型的 Yamabe 孤子,则流形具有恒定的标量曲率和流矢量场 [公式:见文]是杀戮。此外,[公式:见文本] 具有恒定曲率 [公式:见文本] 或流向量场 [公式:见文本] 是严格的接触无穷小变换。此外,我们证明,如果 3 维 [公式:见文本]-接触度量流形 [公式:见文本] 的度量承认梯度 Yamabe 孤子,那么流形要么是平坦的,要么标量曲率是恒定的。此外,要么势函数为常数,要么流形的截面曲率恒定[公式:见正文]。最后,我们给出了一个例子来验证我们的结果。
更新日期:2020-08-16
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