| Constraining slow-roll inflation in the presence of dynamical dark energy | |
Xia JQ(夏俊卿) ; Zhang XM(张新民); Xia, JQ; Zhang, XM
| |
| 2008 | |
| Source Publication | PHYSICS LETTERS B
 |
| Volume | 660Issue:4Pages:#REF! |
| Corresponding Author | Xia, JQ (reprint author), Chinese Acad Sci, Inst High Energy Phys, POB 918-4, Beijing 100049, Peoples R China. |
| Subtype | Article |
| Abstract | In this Letter we perform a global analysis of the constraints on the inflationary parameters in the presence of dynamical dark energy models from the current observations, including the three-year Wilkinson Microwave Anisotropy Probe (WMAP3) data, Boomerang-2K2, CBI, VSA, ACBAR, SDSS LRG, 2dFGRS and ESSENCE (192 sample). We use the analytic description of the inflationary power spectra in terms of the horizon-flow parameters {epsilon(i)} With the first order approximation in the slow-roll expansion, we find that the constraints on the horizon-flow parameters are epsilon(1) < 0.014 (95% C.L.) and epsilon(2) =0.034 +/- 0.024 (1 sigma) in the ACDM model. In the framework of dynamical dark energy models, the constraints become obviously weak, epsilon(1) < 0.022 (95% C.L.) and epsilon(2) = -0.006 +/- 0.039 (1 sigma), and the inflation models with a "blue" tilt, which are excluded about 2 sigma in the ACDM model, are allowed now. With the second order approximation, the constraints on the horizon-flow parameters are significantly relaxed further. If considering the non-zero epsilon(3), the large running of the scalar spectral index is found for the ACDM model, as well as the dynamical dark energy models. (C) 2008 Elsevier B.V. All rights reserved. |
| Subject Area | Physics |
| DOI | 10.1016/j.physletb.2008.01.010 |
| Indexed By | SCI ; INSPIREHEP ; ADS |
| WOS Subject | Physics, Multidisciplinary |
| WOS ID | WOS:000253883700003 |
| ADS Bibcode | 2008PhLB..660..287X |
| ADS URL | https://ui.adsabs.harvard.edu/abs/2008PhLB..660..287X |
| ADS CITATIONS | https://ui.adsabs.harvard.edu/abs/2008PhLB..660..287X/citations |
| inspireid | 770617 |
| inspireURL | https://inspirehep.net/literature/770617 |
| Citation statistics |
Cited Times:4 [INSPIRE]
Cited Times:4 [ADS]
|
| Document Type | 期刊论文 |
| Identifier | http://ir.ihep.ac.cn/handle/311005/227429 |
| Collection | 理论物理室 粒子天体物理中心 |
| Recommended Citation GB/T 7714 | Xia JQ,Zhang XM,Xia, JQ,et al. Constraining slow-roll inflation in the presence of dynamical dark energy[J]. PHYSICS LETTERS B,2008,660(4):#REF!. |
| APA | 夏俊卿,张新民,Xia, JQ,&Zhang, XM.(2008).Constraining slow-roll inflation in the presence of dynamical dark energy.PHYSICS LETTERS B,660(4),#REF!. |
| MLA | 夏俊卿,et al."Constraining slow-roll inflation in the presence of dynamical dark energy".PHYSICS LETTERS B 660.4(2008):#REF!. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
Items in the repository are protected by copyright, with all rights reserved, unless otherwise indicated.
Edit Comment