Published January 16, 2012
| Version v1
Journal article
G-Curvaton
Creators
- 1. College of Physical Sciences, Graduate University of Chinese Academy of Sciences, Beijing 100049 (China)
- 2. TPCSF, Institute of High Energy Physics, CAS, P.O. Box 918-4, Beijing 100049 (China)
- 3. Leung Center for Cosmology and Particle Astrophysics, National Taiwan University, Taipei 106, Taiwan (China)
- 4. Department of Physics and Center for Theoretical Sciences, National Taiwan University, Taipei 10617, Taiwan (China)
Description
In this Letter, we study a curvaton model where the curvaton is acted by Galileon field. We calculate the power spectrum of fluctuation of G-Curvaton during inflation and discuss how it converts to the curvature perturbation after the end of inflation. We estimate the bispectrum of curvature perturbation induced, and show the dependence of non-Gaussianity on the parameters of model. It is found that our model can have sizable local and equilateral non-Gaussianities to up to O(102), which is illustrated by an explicit example.
Availability note (English)
Available from http://dx.doi.org/10.1016/j.physletb.2011.12.016Additional details
Identifiers
- DOI
- 10.1016/j.physletb.2011.12.016;
- arXiv
- arXiv:1110.1795v2;
- PII
- S0370-2693(11)01473-0;
Publishing Information
- Journal Title
- Physics Letters. Section B
- Journal Volume
- 707
- Journal Issue
- 1
- Journal Page Range
- p. 11-21
- ISSN
- 0370-2693
- CODEN
- PYLBAJ
INIS
- Country of Publication
- Netherlands
- Country of Input or Organization
- Syrian Arab Republic
- INIS RN
- 43098377
- Subject category
- S71: CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; S72: PHYSICS OF ELEMENTARY PARTICLES AND FIELDS;
- Descriptors DEI
- DISTURBANCES; FLUCTUATIONS; INFLATIONARY UNIVERSE; PERTURBATION THEORY; SPECTRA
- Descriptors DEC
- COSMOLOGICAL MODELS; MATHEMATICAL MODELS; VARIATIONS
Optional Information
- Copyright
- Copyright (c) 2011 Elsevier Science B.V., Amsterdam, The Netherlands, All rights reserved.