标题： 在$f(R,T)$引力中的膜宇宙学 显示英文标题

标题： Braneworld cosmology in $f(R,T)$ gravity

摘要： Braneworld情景将我们可观测的宇宙视为嵌入在5D空间（称为体空间）中的膜。 在这项工作中，我推导了在广义引力理论中膜世界模型的场方程，即$f(R,T)$引力，其中$R$和$T$分别表示里奇标量和能量-动量张量的迹。 从这种方法得到的宇宙学参数与来自Ia型超新星数据结合重子声学振荡和宇宙微波背景观测的最新约束一致，支持这种对宇宙动力学的替代描述。 显示英文摘要

摘要： Braneworld scenarios consider our observable universe as a brane embedded in a 5D space, named bulk. In this work, I derive the field equations of a braneworld model in a generalized theory of gravitation, namely $f(R,T)$ gravity, with $R$ and $T$, representing the Ricci scalar and the trace of the energy-momentum tensor, respectively. The cosmological parameters obtained from this approach are in agreement with recent constraints from Supernovae Ia data combined with baryon acoustic oscillations and cosmic microwave background observations, favouring such an alternative description of the universe dynamics.