2015
DOI: 10.1142/s0218271815410011
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Constraint on inflation model from BICEP2 and WMAP 9-year data

Abstract: Even though Planck data released in 2013 (P13) is not compatible with Background Imaging of Cosmic Extragalactic Polarization (B2) and some local cosmological observations, including Supernova Legacy Survey (SNLS) samples and H0 prior from Hubble Space Telescope (HST) etc, Wilkinson Microwaves Anisotropy Probe 9-year data (W9) is consistent with all of them in the base six-parameter ΛCDM+tensor cosmology quite well. In this letter, we adopt the combinations of B2+W9 and B2+W9+SNLS+BAO+HST to constrain the cosm… Show more

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Cited by 4 publications
(3 citation statements)
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“…Non-trivial initial states for perturbations naturally accommodates the running of the tilt needed to explain the BICEP2 result [18]. Additionally, in [19], by the combinations of BICEP2+WMAP 9-year data, the pLI model and the inflation model with inverse power-law potential can fit the data nicely. These interesting data can be stimulated us to slow-roll PLI for excited-dS space-time 1 .…”
Section: Introductionmentioning
confidence: 91%
“…Non-trivial initial states for perturbations naturally accommodates the running of the tilt needed to explain the BICEP2 result [18]. Additionally, in [19], by the combinations of BICEP2+WMAP 9-year data, the pLI model and the inflation model with inverse power-law potential can fit the data nicely. These interesting data can be stimulated us to slow-roll PLI for excited-dS space-time 1 .…”
Section: Introductionmentioning
confidence: 91%
“…The number of e-folds in the slow-roll regime is expressed as 6 Recall the facts that φ = φ 0 = 0, u = u 0 = 0, and u 0 = ±φ 0 . 20) with λ f the value of λ at the end of inflation. If λ λ f , the representation of N e (λ) for the effective potential in Eq.…”
Section: Casementioning
confidence: 99%
“…012 (Planck + WP + lensing), + BAO).In addition, there are other research teams that give their results. For example, document[126] combines background imaging of chemical extragalactic polarisation (B2), Planck and WP data set 127] combines data from Superova legacy Survey (SNLS) to give 04 document[128] combines data from Planck, supernova union 2.1, Bao and bicep2 to give the detected photon polarization B mode can not be completely explained by topological defects or large external dimension model[129] [130]. The most likely explanation for the large scale ratio is the tensor disturbance model produced in the period of inflation.The same parameters are used in both figures, see the legend the relationship between the scale ratio r and the spectral index n s on the left; the relationship between the spectral index run n′ s and the spectral index n s on the right Using these data and results, the parameters α and β in the model are limited.…”
mentioning
confidence: 99%