论文标题
宇宙学参数，稳定性分析和能量条件的估计在可行的修饰重力中
Estimation of Cosmological Parameters, Stability Analysis and Energy Conditions in Viable Modified Gravity
论文作者
论文摘要
In the present paper, we have investigated the Friedmann Robertson Walker (FRW) model in viable $f(R,T)$ gravity with $f(R,T)$ function proposed as $f(R,T)=R +ξT^{1/2}$, where $ξ$ is an arbitrary constant, $R$ is the scalar curvature and $T$ is the trace of stress energy tensor.定义比例因子，通过数值求解场方程并分析了能量条件。此外，确定哈勃参数和减速参数，将估计其当前值。此外，使用了57个红移数据（超新星宇宙学项目的42个红移数据和来自卡兰/托洛诺超新星调查的15个红移数据）用于估计宇宙的年龄，并找到亮度距离和明显幅度的最佳拟合曲线。
In the present paper, we have investigated the Friedmann Robertson Walker (FRW) model in viable $f(R,T)$ gravity with $f(R,T)$ function proposed as $f(R,T)=R +ξT^{1/2}$, where $ξ$ is an arbitrary constant, $R$ is the scalar curvature and $T$ is the trace of stress energy tensor. Defining the scale factor, the field equations are solved numerically and the energy conditions are analyzed. Further, determining Hubble parameter and deceleration parameter, their present values are estimated. Furthermore, 57 redshift data (42 redshift data from Supernova Cosmology project and 15 redshift data from Calán/ Tolono Supernova survey) are used to estimate the age of the universe and to find the best fit curves for luminosity distance and apparent magnitude.
