Towards conformal cosmology
arXiv:1508.07728 · doi:10.1134/S0021364015200072
Abstract
Approximate de Sitter symmetry of inflating Universe is responsible for the approximate flatness of the power spectrum of scalar perturbations. However, this is not the only option. Another symmetry which can explain nearly scale-invariant power spectrum is conformal invariance. We give a short review of models based on conformal symmetry which lead to the scale-invariant spectrum of the scalar perturbations. We discuss also potentially observable features of these models.
Mini-review, prepared for JETP Letters; 11 pages, 3 figures
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Cited by in corpus (6)
- Cosmological spectrum of two-point correlation function from vacuum fluctuation of Stringy Axion field in De Sitter space: A study of the role of Quantum Entanglement
- General quadrupolar statistical anisotropy: Planck limits
- Scale Factor Duality for Conformal Cyclic Cosmologies
- On the EFT of Conformal Symmetry Breaking
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- Perturbations on and off de Sitter brane in anti-de Sitter bulk