Scale dependences of local form non-Gaussianity parameters from a DBI isocurvature field
Cosmology and Nongalactic Astrophysics
2015-05-30 v2 General Relativity and Quantum Cosmology
High Energy Physics - Phenomenology
High Energy Physics - Theory
Abstract
We derive the spectral indices and their runnings of local form and from a DBI isocurvature field and we find that the indices are suppressed by the sound speed . This effect can be interpreted by the Lorentz boost from the viewpoint in the frame where brane is moving.
Keywords
Cite
@article{arxiv.1108.4474,
title = {Scale dependences of local form non-Gaussianity parameters from a DBI isocurvature field},
author = {Qing-Guo Huang and Chunshan Lin},
journal= {arXiv preprint arXiv:1108.4474},
year = {2015}
}
Comments
12 pages, 1 figure