arXivDaily arXiv每日学术速递 周一至周五更新
arXiv周末暂无论文更新,休息一下吧,周末愉快~~
arXiv 2107.04142gr-qchep-th
收藏

$f(T,\mathcal{T})$引力中厚膜的一阶形式

First-order formalism for thick branes in $f(T,\mathcal{T})$ gravity

A. R. P. Moreira, F. C. E. Lima, J. E. G. Silva, C. A. S. Almeida

摘要:

本文研究了最近提出的$f(T,\mathcal{T})$引力理论中构造的厚膜情形,其中$T$称为挠率标量,$\mathcal{T}$是能量动量张量的迹.我们使用的一阶形式主义,以找到解析解的模型,包括一个标量场作为一个源。特别是,我们描述了两个有趣的情况下,在第一,我们得到一个双扭结的解决方案,它产生了分裂的膜。在第二种情况下,适当的管理得到的扭结解决方案产生分裂的扭曲参数,证明了由满足弱和强能量条件的能量密度组件加强的膜。此外,我们还研究了这种情况下引力摄动的行为。控制能量-动量张量的挠率和迹线的参数倾向于将质量模移到膜的核心,保持一个无间隙的不可定域的稳定的质量模塔,并产生更多的定域无质量模。

英文摘要:

In this paper, we study the thick brane scenario constructed in the recently proposed $f(T,\mathcal{T})$ theories of gravity, where $T$ is called the torsion scalar, and $\mathcal{T}$ is the trace of the energy-momentum tensor. We use the first-order formalism to find analytical solutions for models that include a scalar field as a source. In particular, we describe two interesting cases in which, in the first, we obtain a double-kink solution, which generates a splitting in the brane. In the second case, proper management of a kink solution obtained generates a splitting in the brane intensified by the torsion parameter, evinced by the energy density components satisfying the weak and strong energy conditions. In addition, we investigate the behavior of the gravitational perturbations in this scenario. The parameters that control the torsion and the trace of the energy-momentum tensor tend to shift the massive modes to the core of the brane, keeping a gapless non-localizable and stable tower of massive modes and producing more localized massless modes.

机构、总结、中文摘要均由AI分析而来,可能存在错误,请以论文正文为准。

↑