Published October 1, 2011
| Version v1
Journal article
Scale dependences of local form non-Gaussianity parameters from a DBI isocurvature field
Creators
- 1. State Key Laboratory of Theoretical Physics, Institute of Theoretical Physics, Chinese Academy of Sciences, Zhong Guan Cun East Street 55, Beijing (China)
- 2. Institute for the Physics and Mathematics of the Universe, The University of Tokyo, Kashiwa, 277-8583 (Japan)
Description
We derive the spectral indices and their runnings of local form fNL and gNL from a DBI isocurvature field and we find that the indices are suppressed by the sound speed cs. This effect can be interpreted by the Lorentz boost from the viewpoint in the frame where brane is moving
Availability note (English)
Available from http://dx.doi.org/10.1088/1475-7516/2011/10/005Additional details
Identifiers
Publishing Information
- Journal Title
- Journal of Cosmology and Astroparticle Physics
- Journal Volume
- 2011
- Journal Issue
- 10
- Journal Page Range
- p. 005
- ISSN
- 1475-7516
INIS
- Country of Publication
- United States
- Country of Input or Organization
- International Atomic Energy Agency (IAEA)
- INIS RN
- 45101574
- Subject category
- S79: ASTROPHYSICS, COSMOLOGY AND ASTRONOMY;
- Descriptors DEI
- ASTROPHYSICS; BORN-INFELD THEORY; BRANES; COSMOLOGY; LORENTZ TRANSFORMATIONS; REFRACTIVE INDEX; SOUND WAVES; VELOCITY
- Descriptors DEC
- OPTICAL PROPERTIES; PHYSICAL PROPERTIES; PHYSICS; TRANSFORMATIONS