Published June 11, 2015 | Version v1
Journal article Metadata-only

Nearly scale-invariant power spectrum and quantum cosmological perturbations in the gravity's rainbow scenario

Creators

  • 1. State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, 100049, Beijing (China)
  • 2. Institute of High Energy Physics, Chinese Academy of Sciences, 100049, Beijing (China)

Description

We propose the gravity's rainbow scenario as a possible alternative of the inflation paradigm to account for the flatness and horizon problems. We focus on studying the cosmological scalar perturbations which are seeded by the quantum fluctuations in the very early universe. The scalar power spectrum is expected to be nearly scale-invariant. We estimate the rainbow index λ and energy scale M in the gravity's rainbow scenario by analyzing the Planck temperature and WMAP polarization datasets. The constraints on them are given by λ=2.933±0.012 and ln(105M/Mp)=-0.401-0.451+0.457 at the 68 % confidence level

Availability note (English)

Available from http://dx.doi.org/10.1140/epjc/s10052-015-3457-y; Available from http://repo.scoap3.org/record/10645

Additional details

Identifiers

URL
https://repo.scoap3.org/record/10645;
DOI
10.1140/epjc/s10052-015-3457-y;
arXiv
arXiv:1412.3600;

Publishing Information

Journal Title
European Physical Journal. C
Journal Volume
75
Journal Issue
6
Journal Page Range
[vp.]
ISSN
1434-6044

INIS

Country of Publication
Germany
Country of Input or Organization
International Atomic Energy Agency (IAEA)
INIS RN
47021246
Subject category
S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
Descriptors DEI
COSMOLOGICAL INFLATION; COSMOLOGY; DISTURBANCES; GRAVITATION; LIMITING VALUES; POLARIZATION; QUANTUM SYSTEMS; SPECTRA; UNIVERSE

Optional Information

Copyright
Copyright (c) 2015, The Author(s)
Notes
PUBLISHER-ID: s10052-015-3457-y; ARXIV: 1412.3600; OAI: oai:repo.scoap3.org:10645
Funding organization
SCOAP3, CERN, Geneva (Switzerland)