Reconstructing the local potential of inflation with BICEP2 data
Abstract
We locally reconstruct the inflationary potential by using the current constraints on r and n{sub s} from BICEP2 data. Assuming small and negligible α{sub s}, the inflationary potential is approximately linear in Δφ∼ M{sub pl} range but becomes non-linear in Δφ∼ 10 M{sub pl} range. However if we vary the value of α{sub s} within the range given by constraints from Planck measurement, the local reconstruction is only valid in the range of Δφ∼ 0.4 M{sub pl}, which challenges the inflationary background from the point of view of effective field theory. We show that, within the range of Δ φ ∼ 0.4 M{sub pl}, the inflation potential can be precisely reconstructed. With the current reconstruction, we show that V(φ) ∼ φ{sup 2} and φ{sup 3} are consistent, while φ model is ruled out by 95% confidence level of the reconstructed range of potential. This sets up a strong limit of large-field inflation models.
- Authors:
-
- Department of Physics and Astronomy, University of British Columbia, 6224 Agricultural Road, Vancouver, BC, V6T 1Z1 Canada (Canada)
- Centre for Theoretical Cosmology, DAMTP, University of Cambridge, Wilberforce Rd, Cambridge, CB3 0WA U.K. (United Kingdom)
- Publication Date:
- OSTI Identifier:
- 22375866
- Resource Type:
- Journal Article
- Journal Name:
- Journal of Cosmology and Astroparticle Physics
- Additional Journal Information:
- Journal Volume: 2014; Journal Issue: 09; Other Information: Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 1475-7516
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; 79 ASTROPHYSICS, COSMOLOGY AND ASTRONOMY; COSMOLOGICAL INFLATION; FIELD THEORIES; NONLINEAR PROBLEMS; POTENTIALS
Citation Formats
Ma, Yin-Zhe, and Wang, Yi. Reconstructing the local potential of inflation with BICEP2 data. United States: N. p., 2014.
Web. doi:10.1088/1475-7516/2014/09/041.
Ma, Yin-Zhe, & Wang, Yi. Reconstructing the local potential of inflation with BICEP2 data. United States. https://doi.org/10.1088/1475-7516/2014/09/041
Ma, Yin-Zhe, and Wang, Yi. 2014.
"Reconstructing the local potential of inflation with BICEP2 data". United States. https://doi.org/10.1088/1475-7516/2014/09/041.
@article{osti_22375866,
title = {Reconstructing the local potential of inflation with BICEP2 data},
author = {Ma, Yin-Zhe and Wang, Yi},
abstractNote = {We locally reconstruct the inflationary potential by using the current constraints on r and n{sub s} from BICEP2 data. Assuming small and negligible α{sub s}, the inflationary potential is approximately linear in Δφ∼ M{sub pl} range but becomes non-linear in Δφ∼ 10 M{sub pl} range. However if we vary the value of α{sub s} within the range given by constraints from Planck measurement, the local reconstruction is only valid in the range of Δφ∼ 0.4 M{sub pl}, which challenges the inflationary background from the point of view of effective field theory. We show that, within the range of Δ φ ∼ 0.4 M{sub pl}, the inflation potential can be precisely reconstructed. With the current reconstruction, we show that V(φ) ∼ φ{sup 2} and φ{sup 3} are consistent, while φ model is ruled out by 95% confidence level of the reconstructed range of potential. This sets up a strong limit of large-field inflation models.},
doi = {10.1088/1475-7516/2014/09/041},
url = {https://www.osti.gov/biblio/22375866},
journal = {Journal of Cosmology and Astroparticle Physics},
issn = {1475-7516},
number = 09,
volume = 2014,
place = {United States},
year = {Mon Sep 01 00:00:00 EDT 2014},
month = {Mon Sep 01 00:00:00 EDT 2014}
}