论文标题
通货膨胀和脱钩
Inflation and Decoupling
论文作者
论文摘要
在有效的低能理论中，重模式的脱钩是物理学中最基本的概念之一。它告诉我们，模式必须对曲率半径大于波长的重力背景的物理物理具有可忽略的作用。尽管如此，仍然有声称，即使哈勃参数可忽略不计，即使与普朗克质量相比，跨普兰克模式在通货膨胀的持续时间内造成了严重的结合。如果是真的，这意味着通货膨胀违反了解耦的原则，或者至少需要其重新制定。我们阐明了这些界限所基于并分别对其进行反驳的基本误解。我们的结论是，通货膨胀完全属于可靠的有效现场理论治疗的有效性，并且不会遭受任何虚假的跨普兰克问题。
Decoupling of heavy modes in effective low energy theory is one of the most fundamental concepts in physics. It tells us that modes must have a negligible effect on the physics of gravitational backgrounds with curvature radius larger than their wavelengths. Despite this, there exist claims that trans-Planckian modes put severe bound on the duration of inflation even when the Hubble parameter is negligible as compared to the Planck mass. If true, this would mean that inflation violates the principle of decoupling or at least requires its reformulation. We clarify the fundamental misconception on which these bounds are based and respectively refute them. Our conclusion is that inflation fully falls within the validity of a reliable effective field theory treatment and does not suffer from any spurious trans-Planckian problem.
