期刊
JOURNAL OF HIGH ENERGY PHYSICS
卷 -, 期 3, 页码 -出版社
SPRINGER
DOI: 10.1007/JHEP03(2019)006
关键词
Effective Field Theories; Cosmology of Theories beyond the SM; Superstring Vacua
资金
- Ministry of Science, ICT & Future Planning, Gyeongsangbuk-do
- National Research Foundation of Korea [2018R1D1A1B07049126]
- Ministry of Science, ICT & Future Planning, Pohang City
- National Research Foundation of Korea [2018R1D1A1B07049126] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
One class of single-field inflationary models compatible with the recently-conjectured Swampland criteria would be those in which a Hubble slow-roll arameter E-H is not the same as E-V approximate to (V/V)(2). However, a roadblock for these models (with a convex potential) lie in the unacceptably high tensor-to-scalar ratio, r, generically predicted by them. In this work, illustrating through an explicit example, we point out that having a non-Bunch-Davies component to the initial state of cosmological perturbations makes the value of r compatible with observations. In this way, we lay down a new path even for standard models of slow-roll inflation to be consistent with the Swampland criteria by invoking deviations from the Bunch-Davies initial state.
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