arXivDaily arXiv每日学术速递 周一至周五更新
arXiv 1508.01484hep-thastro-ph.COhep-ph
收藏

来自正合重整群的通货膨胀潜力

Inflationary Potentials from the Exact Renormalisation Group

Sašo Grozdanov, David Kraljic, Eirik Eik Svanes

摘要:

我们表明,暴胀慢滚潜力可以推导出的IR限制的非微扰精确重整化群方程的标量场内的平均场近似。结果如下,而无需指定普朗克尺度下UV理论的拉格朗日量。我们假设该理论包含一个标量模式与其他UV场的耦合被抑制,并且更高的导数耦合被抑制。由此产生的有效势能导致了缓慢的通货膨胀,这与最近的观察结果完全一致。作为一个例子,建议的重整化群程序的工作原理,我们执行一个明确的计算中的$ϕ^4$理论。

英文摘要:

We show that an inflationary slow-roll potential can be derived as an IR limit of the non-perturbative exact renormalisation group equation for a scalar field within the mean-field approximation. The result follows without having to specify a Lagrangian for the UV theory at the Planck scale. We assume that the theory contains a scalar mode with suppressed coupling to other UV fields, and that higher derivative couplings are suppressed. The resulting effective potential gives rise to slow-roll inflation, which is fully consistent with the recent observations. As an example of how the proposed renormalisation group procedure works, we perform an explicit calculation in the $ϕ^4$ theory.

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。

↑