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Geometry of almost contact metrics as an almost ∗-η-Ricci–Bourguignon solitons
Reviews in Mathematical Physics ( IF 1.8 ) Pub Date : 2023-05-12 , DOI: 10.1142/s0129055x23500125
Santu Dey 1 , Young Jin Suh 2
Affiliation  

In this paper, we give some characterizations by considering almost ∗-η-Ricci–Bourguignon soliton as a Kenmotsu metric. It is shown that if a Kenmotsu metric endows a ∗-η-Ricci–Bourguignon soliton, then the curvature tensor R with the soliton vector field V is given by the expression (VR)(V1,ξ)ξ=2𝜗{V1(r)ξV1(Dr)+ξ(Dr)ξ(r)ξDr}. Next, we show that if an almost Kenmotsu manifold such that ξ belongs to (κ,2)-nullity distribution where κ<1 acknowledges a ∗-η-Ricci–Bourguignon soliton satisfying Ω+ψ𝜗[(r+4n2)+{ξ(ξ(r))ξ(Dr)}], then the manifold is Ricci-flat and is locally isometric to n+1(4)×n. Moreover if the metric admits a gradient almost ∗-η-Ricci–Bourguignon soliton and ξ leaves the scalar curvature r invariant on a Kenmotsu manifold, then the manifold is an η-Einstein. Also, if a Kenmotsu metric represents an almost ∗-η-Ricci–Bourguignon soliton with potential vector field V is pointwise collinear with ξ, then the manifold is an η-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η-作为 Kenmotsu 度量的 Ricci-Bourguignon 孤子。结果表明,如果 Kenmotsu 度量赋予 ∗-η-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VV1,ΨΨ=2𝜗{V1rΨ-V1Dr+ΨDr-ΨrΨ-Dr}接下来,我们证明如果一个几乎 Kenmotsu 流形使得Ψ属于κ,-2-无效分布,其中κ<-1承认*-η- 里奇-布吉尼翁孤子满足Ω+ψ𝜗[r+4n2+{ΨΨr-ΨDr}],则流形是 Ricci 平坦的并且局部等距于n+1-4×n。此外,如果度量承认梯度几乎 ∗-η- 里奇-布吉尼翁孤子和Ψ使标量曲率r在 Kenmotsu 流形上不变,则流形是η-爱因斯坦。另外,如果 Kenmotsu 度量表示几乎 ∗-η-具有势矢量场V的 Ricci–Bourguignon 孤子与Ψ,那么流形是η-爱因斯坦。

更新日期:2023-05-12
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