Introduction to the Number of e-Folds in Slow-Roll Inflation

IF 2.5 4区物理与天体物理 Q2 ASTRONOMY & ASTROPHYSICS

Universe Pub Date : 2024-06-29 DOI:10.3390/universe10070284

Alessandro Di Marco, Emanuele Orazi, Gianfranco Pradisi

引用次数: 0

Abstract

In this review, a pedagogical introduction to the concepts of slow-roll inflationary universe and number of e-folds is provided. In particular, the difference between the basic notion of e-folds (Ne) the total number of e-folds (NT) and the number of e-folds before the end of inflation (N) is outlined. The proper application of the number of e-folds before the end of inflation is discussed both as a time-like variable for the scalar field evolution and as a key parameter for computing inflationary predictions.

查看原文本刊更多论文

慢卷膨胀中的电子褶皱数介绍

在这篇综述中，我们从教学角度介绍了慢卷膨胀宇宙和电子褶皱数的概念。特别是概述了电子褶皱（Ne）的基本概念、电子褶皱总数（NT）和膨胀结束前的电子褶皱数（N）之间的区别。讨论了膨胀结束前的电子折叠数作为标量场演化的类时间变量和计算膨胀预测的关键参数的正确应用。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

求助全文

约1分钟内获得全文求助全文

来源期刊

Universe Physics and Astronomy-General Physics and Astronomy

CiteScore

4.30

自引率

17.20%

发文量

562

审稿时长

24.38 days

期刊介绍： Universe (ISSN 2218-1997) is an international peer-reviewed open access journal focused on fundamental principles in physics. It publishes reviews, research papers, communications, conference reports and short notes. Our aim is to encourage scientists to publish their research results in as much detail as possible. There is no restriction on the length of the papers.