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arXiv 1409.1902gr-qcastro-ph.COhep-th
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四阶形变广义相对论

Fourth order deformed general relativity

Rhiannon Cuttell, Mairi Sakellariadou

摘要:

每当在圈量子宇宙学的有效方法框架内强加反常自由的条件时,人们似乎得出结论,需要对一般协方差进行变形。在这里,从一般的变形,我们重新获得一个有效的引力拉格朗日,包括条款,四阶外曲率。随后,我们限制了修正的形式,然后研究在存在完美流体或标量场的情况下发生大反弹和实现暴胀时代的条件。

英文摘要:

Whenever the condition of anomaly freedom is imposed within the framework of effective approaches to loop quantum cosmology, one seems to conclude that a deformation of general covariance is required. Here, starting from a general deformation we regain an effective gravitational Lagrangian including terms up to fourth order in extrinsic curvature. We subsequently constrain the form of the corrections, and then investigate the conditions for the occurrence of a big bounce and the realisation of an inflationary era, in the presence of a perfect fluid or scalar field.

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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