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arXiv 2107.02936gr-qchep-th
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对称远平行引力中的宇宙学弹跳方案

Cosmological bouncing scenarios in symmetric teleparallel gravity

Sanjay Mandal, N. Myrzakulov, P. K. Sahoo, R. Myrzakulov

摘要:

对称远平行引力理论是一种特殊的引力理论,它与消失的仿射联系是一致的。该理论是广义相对论的一种替代和更简单的几何表述,其中非度规性$Q$驱动引力相互作用。我们的兴趣在于探索宇宙反弹方案在一个平坦的弗里德曼-利马特雷-罗伯逊-沃克(FLRW)时空在这个框架内。我们探索弹跳的情况下,两种不同的拉格朗日形式的$f(Q)$,如线性和非线性依赖于$Q$。我们已经成功地检查了所有的能量条件和稳定性分析,这两个模型提出了一个物质反弹。

英文摘要:

Symmetric Teleparallel Gravity is an exceptional theory of gravity that is consistent with the vanishing affine connection. This theory is an alternative and a simpler geometrical formulation of general relativity, where the non-metricity $Q$ drives the gravitational interaction. Our interest lies in exploring the cosmological bouncing scenarios in a flat Friedmann-Limaître-Robertson-Walker (FLRW) spacetime within this framework. We explore bouncing scenarios with two different Lagrangian forms of $f(Q)$ such as a linearly and non-linearly dependence on $Q$. We have successfully examined all the energy conditions and stability analysis for both models to present a matter bounce.

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。

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