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How a Conformally Flat Impacts Gauss-Bonnet Gravity?
Fortschritte der Physik ( IF 3.9 ) Pub Date : 2021-08-20 , DOI: 10.1002/prop.202100088 Avik De 1 , Tee‐How Loo 2 , Raja Solanki 3 , P.K. Sahoo 3
Fortschritte der Physik ( IF 3.9 ) Pub Date : 2021-08-20 , DOI: 10.1002/prop.202100088 Avik De 1 , Tee‐How Loo 2 , Raja Solanki 3 , P.K. Sahoo 3
Affiliation
First and foremost, we show that a 4-dimensional conformally flat generalized Ricci recurrent spacetime is an Einstein manifold. We examine such a spacetime as a solution of -gravity theory and it is shown that the additional terms from the modification of the gravitational sector can be expressed as a perfect fluid. Several energy conditions are investigated with and . For both the models, weak, null and dominant energy conditions are satisfied while strong energy condition is violated, which is a good agreement with the recent observational studies which reveals that the current universe is in accelerating phase.
中文翻译:
共形平面如何影响 Gauss-Bonnet 重力?
首先,我们证明了 4 维共形平坦广义 Ricci 循环时空是爱因斯坦流形。我们研究了这样一个时空作为引力理论的解决方案,并且表明来自引力扇区修改的附加项可以表示为完美流体。用和研究了几个能量条件。对于这两个模型,弱能量、零能量和主导能量条件都得到满足,而强能量条件被违反,这与最近的观测研究显示当前宇宙处于加速阶段非常吻合。
更新日期:2021-10-06
中文翻译:
共形平面如何影响 Gauss-Bonnet 重力?
首先,我们证明了 4 维共形平坦广义 Ricci 循环时空是爱因斯坦流形。我们研究了这样一个时空作为引力理论的解决方案,并且表明来自引力扇区修改的附加项可以表示为完美流体。用和研究了几个能量条件。对于这两个模型,弱能量、零能量和主导能量条件都得到满足,而强能量条件被违反,这与最近的观测研究显示当前宇宙处于加速阶段非常吻合。