Path integral for multi-field inflation
Path integral for multi-field inflation
复制标题
多场膨胀的路径积分
DOI：
--
复制
发表时间：
2016
期刊：
影响因子：
--
通讯作者：
G. Shiu
中科院分区：
文献类型：
--
作者：
Jinn;M. Seo;G. Shiu
本文发展了研究多场暴胀中宇宙学微扰的路径积分形式，它特别适合于研究具有规范对称性的量子理论，如量子同态不变性。我们制定规范固定条件的泊松括号的约束的基础上，从中我们得到两个方便的规范，适合于多场暴胀。然后，我们采用在形式主义，推导出最一般的表达的曲率扰动的功率谱，包括从曲率模式与其他光的自由度的相互作用的校正。我们还讨论了相互作用的双谱的贡献。
A bstractWe develop the path integral formalism for studying cosmological perturbations in multi-field inflation, which is particularly well suited to study quantum theories with gauge symmetries such as diffeomorphism invariance. We formulate the gauge fixing conditions based on the Poisson brackets of the constraints, from which we derive two convenient gauges that are appropriate for multi-field inflation. We then adopt the in-in formalism to derive the most general expression for the power spectrum of the curvature perturbation including the corrections from the interactions of the curvature mode with other light degrees of freedom. We also discuss the contributions of the interactions to the bispectrum.
影响因子：
6.5
作者：
Ade, P. A. R.;Aghanim, N.;Zonca, A.
通讯作者：
Zonca, A.