Knowledge Management System of Institute of Theoretical Physics, CAS
Li, Jun; Huang, Qing-Guo
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| Inflation model selection revisited | |
| Source Publication | SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY
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| Language | 英语 |
| Keyword | BARYON ACOUSTIC-OSCILLATIONS LARGE-SCALE STRUCTURE NATURAL INFLATION COSMOLOGY FLATNESS UNIVERSE HORIZON SAMPLE |
| Abstract | We update the constraints on the power spectra of primordial curvature perturbation and tensor perturbation including Planck data 2015 (P15) and recently released BICEP2/Keck data (BK15), Baryon Acoustic Oscillation data and the Type Ia supernovae data. We find that the upper limits of tensor-to-scalar ratio are 0.061, 0.064 and 0.072 at 95% confidence level (CL) in the Lambda CDM+r, Lambda CDM+r+alpha(s) and Lambda CDM+r+alpha(s)+beta(s) models respectively, where alpha(s) and beta(s) are the running of scalar spectral index and running of running. The inflation model with a concave potential is favored at more than 95% CL. In addition, parametrizing the slow-roll parameter epsilon similar to 1/N-p, where N is the e-folding number before the end of inflation and taken in the range of [50, 60] and [14, 75] respectively, we conclude that the inflation model with a monomial potential V(phi) similar to phi(n) is disfavored at more than 95% CL, and both the Starobinsky inflation model and brane inflation model are still consistent with the data. |
| 2019 | |
| ISSN | 1674-7348 |
| Volume | 62Issue:12Pages:120412 |
| Cooperation Status | 国内 |
| Subject Area | Physics |
| MOST Discipline Catalogue | Physics, Multidisciplinary |
| DOI | 10.1007/s11433-019-9446-1 |
| Indexed By | SCIE |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://ir.itp.ac.cn/handle/311006/27006 |
| Collection | SCI期刊论文 |
| Affiliation | 1.[Li, Jun 2.Chinese Acad Sci, Inst Theoret Phys, CAS Key Lab Theoret Phys, Beijing 100190, Peoples R China 3.Univ Chinese Acad Sci, Sch Phys Sci, Beijing 100049, Peoples R China |
| Recommended Citation GB/T 7714 | Li, Jun,Huang, Qing-Guo. Inflation model selection revisited[J]. SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,2019,62(12):120412. |
| APA | Li, Jun,&Huang, Qing-Guo.(2019).Inflation model selection revisited.SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY,62(12),120412. |
| MLA | Li, Jun,et al."Inflation model selection revisited".SCIENCE CHINA-PHYSICS MECHANICS & ASTRONOMY 62.12(2019):120412. |
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