Breaking the scale invariance of the primordial power spectrum in Horava-Lifshitz cosmology
Journal Article
·
· Physical Review. D, Particles Fields
- Department of Physical Science, Hiroshima University, Higashi-Hiroshima 739-8526 (Japan)
- Department of Physics, Waseda University, Okubo 3-4-1, Shinjuku, Tokyo, 169-8555 (Japan)
We study the spectral tilt of primordial perturbations in Horava-Lifshitz cosmology. The uniform approximation, which is a generalization of the familiar Wentzel-Kramers-Brillouin method, is employed to compute the spectral index both numerically and analytically in a closed form. We clarify how the spectral index depends on the inflation model and parameters in the modified dispersion relation.
- OSTI ID:
- 21322688
- Journal Information:
- Physical Review. D, Particles Fields, Vol. 80, Issue 6; Other Information: DOI: 10.1103/PhysRevD.80.063514; (c) 2009 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 0556-2821
- Country of Publication:
- United States
- Language:
- English
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