浅浸胀和原始黑洞

IF 5 2区物理与天体物理 Q1 ASTRONOMY & ASTROPHYSICS

Physics of the Dark Universe Pub Date : 2024-11-26 DOI:10.1016/j.dark.2024.101744

Bao-Min Gu , Fu-Wen Shu , Ke Yang

{"title":"浅浸胀和原始黑洞","authors":"Bao-Min Gu , Fu-Wen Shu , Ke Yang","doi":"10.1016/j.dark.2024.101744","DOIUrl":null,"url":null,"abstract":"<div><div>Primordial black holes may arise through ultra slow-roll inflation. In this work we study a toy model of ultra slow-roll inflation with a shallow dip. The ultra slow-roll stage enhances the curvature perturbations and thus the primordial scalar power spectrum. We analyze the features of the power spectrum numerically and analytically, and then give a rough estimate of the lower and upper bound of the enhancement. These large perturbations also produce second order gravitational waves, which are in the scope of future observations.</div></div>","PeriodicalId":48774,"journal":{"name":"Physics of the Dark Universe","volume":"47 ","pages":"Article 101744"},"PeriodicalIF":5.0000,"publicationDate":"2024-11-26","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":"{\"title\":\"Inflation with shallow dip and primordial black holes\",\"authors\":\"Bao-Min Gu , Fu-Wen Shu , Ke Yang\",\"doi\":\"10.1016/j.dark.2024.101744\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><div>Primordial black holes may arise through ultra slow-roll inflation. In this work we study a toy model of ultra slow-roll inflation with a shallow dip. The ultra slow-roll stage enhances the curvature perturbations and thus the primordial scalar power spectrum. We analyze the features of the power spectrum numerically and analytically, and then give a rough estimate of the lower and upper bound of the enhancement. These large perturbations also produce second order gravitational waves, which are in the scope of future observations.</div></div>\",\"PeriodicalId\":48774,\"journal\":{\"name\":\"Physics of the Dark Universe\",\"volume\":\"47 \",\"pages\":\"Article 101744\"},\"PeriodicalIF\":5.0000,\"publicationDate\":\"2024-11-26\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"0\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Physics of the Dark Universe\",\"FirstCategoryId\":\"101\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2212686424003273\",\"RegionNum\":2,\"RegionCategory\":\"物理与天体物理\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"ASTRONOMY & ASTROPHYSICS\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Physics of the Dark Universe","FirstCategoryId":"101","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2212686424003273","RegionNum":2,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}

引用次数: 0

摘要

原始黑洞可能是通过超慢速膨胀产生的。在这项工作中，我们研究了一个具有浅倾角的超慢卷膨胀玩具模型。超慢卷阶段增强了曲率扰动，从而增强了原始标量功率谱。我们用数值和分析方法分析了功率谱的特征，然后给出了增强的下限和上限的粗略估计。这些大扰动还会产生二阶引力波，这属于未来观测的范围。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

查看原文本刊更多论文

Inflation with shallow dip and primordial black holes

Primordial black holes may arise through ultra slow-roll inflation. In this work we study a toy model of ultra slow-roll inflation with a shallow dip. The ultra slow-roll stage enhances the curvature perturbations and thus the primordial scalar power spectrum. We analyze the features of the power spectrum numerically and analytically, and then give a rough estimate of the lower and upper bound of the enhancement. These large perturbations also produce second order gravitational waves, which are in the scope of future observations.

求助全文

通过发布文献求助，成功后即可免费获取论文全文。去求助

来源期刊

Physics of the Dark Universe ASTRONOMY & ASTROPHYSICS-

CiteScore

9.60

自引率

7.30%

发文量

118

审稿时长

61 days

期刊介绍： Physics of the Dark Universe is an innovative online-only journal that offers rapid publication of peer-reviewed, original research articles considered of high scientific impact. The journal is focused on the understanding of Dark Matter, Dark Energy, Early Universe, gravitational waves and neutrinos, covering all theoretical, experimental and phenomenological aspects.