论文标题
带有平方痕迹的宇宙学模型在修饰的重力中
Cosmological models with squared trace in modified gravity
论文作者
论文摘要
在这项工作中，我们以$ f（r，\ mathcal {t}）为特定形式的重力理论介绍了一些简单的宇宙学模型，其中$ r $是ricci stalcor和$ \ nathcal {t} $，其中$ r $是能量 - {t} $的痕迹。研究了两个特殊的宇宙学模型，（i）双曲尺度因子和（ii）哈勃参数的特定形式。观察到这些模型可以预测接近观测值的相关宇宙学参数。两种型号都将与$λ$ CDM模型重叠。我们已经讨论了与模型相关的一些有趣的结果。还讨论了模型中虫洞中大型旅行的可能发生。
In this work we present a few simple cosmological models under the modified theory of gravity in the particular form of $f(R,\mathcal{T})=R+2f(\mathcal{T})$, where $R$ is the Ricci Scalar and $\mathcal{T}$ is the trace of the energy-momentum tensor. Two special cosmological models are studied with (i) hyperbolic scale factor and (ii) specific form of the Hubble parameter. The models are observed to predict relevant cosmological parameters closer to the observational values. Both the models reduce to overlap with the $Λ$CDM model at late times. We have discussed some interesting results related to wormhole solutions as evolved from our model. The possible occurrence of Big Trip in wormholes for the models are also discussed.
