标题： 论$f(T)$引力中粒子产生的时间演化 显示英文标题

标题： On The Temporal Evolution of Particle Production in $f(T)$ Gravity

摘要： 热力学研究宇宙允许在平坦的FLRW框架内，于修改的$f(T)$（$T$是扭曲标量）引力理论中产生粒子。 扭曲标量$T$在修改的引力理论中扮演与曲率标量$R$相同的角色。 我们通过将$f(T)$取为$T$和一个关于$T$的任意函数的和，得到了$f(T)$引力模型，其中包含三种不同的任意函数。 我们观察到，粒子产生描述了宇宙的加速膨胀，而无需宇宙常数或任何未知的“第五元素”成分。 此外，我们讨论了三种情况下的补充压力、粒子数密度和粒子产生率。 显示英文摘要

摘要： The thermodynamical study of the universe allow particle production in modified $f(T)$ ($T$ is the torsion scalar) theory of gravity within a flat FLRW framework for line element. The torsion scalar $T$ plays the same role as the Ricci scalar $R$ in the modified theories of gravity. We derived the $f(T)$ gravity models by taking $f(T)$ as the sum of $T$ and an arbitrary function of $T$ with three different arbitrary function. We observe that the particle production describes the accelerated expansion of the universe without a cosmological constant or any unknown "quintessence" component. Also, we discussed the supplementary pressure, particle number density and particle production rate for three cases.