Reviews in Mathematical Physics ( IF 1.8 ) Pub Date : 2023-05-12 , DOI: 10.1142/s0129055x23500125 Santu Dey 1 , Young Jin Suh 2
In this paper, we give some characterizations by considering almost ∗--Ricci–Bourguignon soliton as a Kenmotsu metric. It is shown that if a Kenmotsu metric endows a ∗--Ricci–Bourguignon soliton, then the curvature tensor R with the soliton vector field V is given by the expression Next, we show that if an almost Kenmotsu manifold such that belongs to -nullity distribution where acknowledges a ∗--Ricci–Bourguignon soliton satisfying , then the manifold is Ricci-flat and is locally isometric to . Moreover if the metric admits a gradient almost ∗--Ricci–Bourguignon soliton and leaves the scalar curvature r invariant on a Kenmotsu manifold, then the manifold is an -Einstein. Also, if a Kenmotsu metric represents an almost ∗--Ricci–Bourguignon soliton with potential vector field V is pointwise collinear with , then the manifold is an -Einstein.
中文翻译:
几乎接触度量的几何作为几乎 *-η-Ricci-Bourguignon 孤子
在本文中,我们通过考虑几乎*-来给出一些特征-作为 Kenmotsu 度量的 Ricci-Bourguignon 孤子。结果表明,如果 Kenmotsu 度量赋予 ∗--Ricci-Bourguignon 孤子,则曲率张量R与孤子矢量场V由以下表达式给出接下来,我们证明如果一个几乎 Kenmotsu 流形使得属于-无效分布,其中承认*-- 里奇-布吉尼翁孤子满足,则流形是 Ricci 平坦的并且局部等距于。此外,如果度量承认梯度几乎 ∗-- 里奇-布吉尼翁孤子和使标量曲率r在 Kenmotsu 流形上不变,则流形是-爱因斯坦。另外,如果 Kenmotsu 度量表示几乎 ∗--具有势矢量场V的 Ricci–Bourguignon 孤子与,那么流形是-爱因斯坦。