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arXiv 0903.4158astro-ph.COgr-qchep-th
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N-形式的暴胀及其稳定性

Inflation from N-Forms and its stability

Tomi S. Koivisto, David F. Mota, Cyril Pitrou

摘要:

各向异性和各向同性的慢卷膨胀支持的n-形式寻求。正则场的强度和它们的曲率被考虑在内,它们被允许有一个潜在的,也是必要时,慢滚,一个非最小曲率耦合。新的各向同性解决方案被发现的三种形式。还证明了某些n型作用量等价于f(R)引力和标量场模型,且可能存在非最小耦合.各向异性的解决方案被发现的两种形式,广义矢量通货膨胀,然而,也两种形式是不稳定的通货膨胀由于非最小耦合曲率。我们还解决了稳定性的各向同性背景解决方案支持的一个三元组的向量。

英文摘要:

Anisotropic and isotropic slow-roll inflation supported by n-forms are sought. Canonical field strengths and their duals are taken into account, and they are allowed to have a potential and also, when necessary for slow-roll, a nonminimal curvature coupling. New isotropic solutions are found for three-forms. It is also shown that some n-form actions are equivalent to f(R) gravity and scalar field models with possible nonminimal couplings. Anisotropic solutions are found for two-forms, generalising vector inflation, however, also the two-form is unstable during inflation due to the nonminimal coupling to curvature. We also address the stability of the isotropic background solutions supported by a triad of vectors .

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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