{"title":"对早期暗能量和AdS真空的审查","authors":"Gen Ye, Yun-song Piao","doi":"10.1103/physrevd.102.083523","DOIUrl":null,"url":null,"abstract":"Present-day temperature $T_0$ of cosmic microwave background has been precisely measured by the FIRAS experiment. We identify why the early dark energy (EDE) (non-negligible around matter-radiation equality) scenario is compatible with the FIRAS result, while lifting the Hubble constant $H_0$. We perform Monte Carlo Markov Chain analysis to confirm our observations. We also present an $\\alpha$-attractor Anti-de Sitter (AdS) model of EDE. As expected, the existence of an AdS phase near recombination can effectively result in $H_0\\sim 73$km/s/Mpc at 1$\\sigma$ region in the bestfit model.","PeriodicalId":8431,"journal":{"name":"arXiv: Cosmology and Nongalactic Astrophysics","volume":"57 9","pages":""},"PeriodicalIF":0.0000,"publicationDate":"2020-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"18","resultStr":"{\"title\":\"T0\\n censorship of early dark energy and AdS vacua\",\"authors\":\"Gen Ye, Yun-song Piao\",\"doi\":\"10.1103/physrevd.102.083523\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"Present-day temperature $T_0$ of cosmic microwave background has been precisely measured by the FIRAS experiment. We identify why the early dark energy (EDE) (non-negligible around matter-radiation equality) scenario is compatible with the FIRAS result, while lifting the Hubble constant $H_0$. We perform Monte Carlo Markov Chain analysis to confirm our observations. We also present an $\\\\alpha$-attractor Anti-de Sitter (AdS) model of EDE. As expected, the existence of an AdS phase near recombination can effectively result in $H_0\\\\sim 73$km/s/Mpc at 1$\\\\sigma$ region in the bestfit model.\",\"PeriodicalId\":8431,\"journal\":{\"name\":\"arXiv: Cosmology and Nongalactic Astrophysics\",\"volume\":\"57 9\",\"pages\":\"\"},\"PeriodicalIF\":0.0000,\"publicationDate\":\"2020-08-25\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"18\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"arXiv: Cosmology and Nongalactic Astrophysics\",\"FirstCategoryId\":\"1085\",\"ListUrlMain\":\"https://doi.org/10.1103/physrevd.102.083523\",\"RegionNum\":0,\"RegionCategory\":null,\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"\",\"JCRName\":\"\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"arXiv: Cosmology and Nongalactic Astrophysics","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1103/physrevd.102.083523","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
Present-day temperature $T_0$ of cosmic microwave background has been precisely measured by the FIRAS experiment. We identify why the early dark energy (EDE) (non-negligible around matter-radiation equality) scenario is compatible with the FIRAS result, while lifting the Hubble constant $H_0$. We perform Monte Carlo Markov Chain analysis to confirm our observations. We also present an $\alpha$-attractor Anti-de Sitter (AdS) model of EDE. As expected, the existence of an AdS phase near recombination can effectively result in $H_0\sim 73$km/s/Mpc at 1$\sigma$ region in the bestfit model.
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