论文标题
分析解决方案和观察性支持：$ f（r，t）$ frity $ f（r，t）= r+h（t）$的研究
Analytic Solutions and Observational support: A study of $f(R,T)$ gravity with $f(R,T)=R+h(T)$
论文作者
论文摘要
目前的工作涉及$ f（r，t）$重力理论的宇宙解决方案，用于完美的流体，具有恒定状态方程（$ω$）。对于可行的宇宙解决方案，$ω$仅限于$ω<\ dfrac {1} {3} $。还取决于任意常数的迹象，有两个可能的解决方案：有限的宇宙模型和宇宙的不断扩展的模型。已经研究了模型的字段理论描述和幽灵标量场的可能性。同样，已经显示了具有改良的Chaplygin气体的等效性。最后，从观察数据得出的结论是，该模型代表了宇宙从物质主导的阶段到当前加速阶段的演变。
The present work deals with cosmological solutions in $f(R,T)$ gravity theory for perfect fluid with constant equation of state ($ω$). For a viable cosmological solution $ω$ is restricted to $ω<\dfrac{1}{3}$. Also depending on the sign of an arbitrary constant one has two possible solutions: a finite universe model and an ever expanding model of the universe. Field theoretic description of the model and possibility of a ghost scalar field has been studied. Also, an equivalence with modified Chaplygin gas has been shown. Finally, from the observational data it has been concluded that this model represents an evolution of the universe from matter dominated phase to present accelerating phase.
