论文标题
在修饰的重力中正式化各向异性通胀
Formalizing Anisotropic Inflation in Modified Gravity
论文作者
论文摘要
在通货膨胀前时代可能以异国情调的方式演变的事实，在这项工作中，我们在修改后的重力中正式化了各向异性进化，重点是通货膨胀前和通货膨胀时期的附近。我们专注于比安奇和陶布等特定指标，并在真空$ f（r）$重力中正式化了通货膨胀理论，在$ f（r）$重力中，带有额外的标量场和高斯bonnet重力。我们讨论各向异性对宇宙进化的定性作用，并在各向同性和各向异性环境中都考虑了几种特定的解决方案，例如De Sitter解决方案。此外，还简要讨论了几种异国情调的重力宇宙学解决方案，例如包含有限时间奇异性的重力解决方案。
Motivated by the fact that the pre-inflationary era may evolve in an exotic way, in this work we formalize anisotropic evolution in the context of modified gravity, focusing on pre-inflationary and near the vicinity of the inflationary epochs. We specialize on specific metrics like Bianchi and Taub and we formalize the inflationary theory in vacuum $F(R)$ gravity, in $F(R)$ gravity with an extra scalar field and in Gauss-Bonnet gravity. We discuss the qualitative effects of the anisotropies on the evolution of the Universe and also we consider several specific solutions, like the de Sitter solution, in both the isotropic and anisotropic contexts. Furthermore, several exotic modified gravity cosmological solutions, like the ones which contain finite time singularities, are also discussed in brief.
