论文标题

触发平行的修饰重力中的弹跳模型

Bounce Models within Teleparallel modified gravity

论文作者

Casalino, Alessandro, Sanna, Bruno, Sebastiani, Lorenzo, Zerbini, Sergio

论文摘要

In this paper, working in a Friedman-Lemaitre-Robertson-Walker (FLRW), first, in the flat case, we recover the generalized Friedman equation of Quantum Loop cosmology, and therefore the cosmological bounce, in the framework of modified teleparallel gravity $f(T)$-model, $T$ being the torsion scalar introduced in teleparallel gravity approach, without invoking unconventional exotic matter.此外,我们在平坦的FLRW时空中再次研究相关的扰动。然后,我们通过使用适当的公式将结果推广到弯曲的FLRW时空,其中与tetrad选择有关的一些问题存在。在这种情况下,还研究了出生攻击模型的结果。

In this paper, working in a Friedman-Lemaitre-Robertson-Walker (FLRW), first, in the flat case, we recover the generalized Friedman equation of Quantum Loop cosmology, and therefore the cosmological bounce, in the framework of modified teleparallel gravity $f(T)$-model, $T$ being the torsion scalar introduced in teleparallel gravity approach, without invoking unconventional exotic matter. Furthermore we study the associated perturbations again in a flat FLRW space-time. Then, we generalize the results to the curved FLRW space-time, where some issues related to the choice of tetrad exist, by using an appropriate formulation. In this context, the results of Born-Infeld model are also investigated.

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