A Galileon Design of Slow Expansion: II
arXiv:1207.2568 · doi:10.1016/j.physletb.2012.11.068
Abstract
We parameterize the evolutions of the slow expansion, which emerges from a static state in infinite past, into different classes. We show that the scale invariant adiabatical perturbation may be generated during these evolutions, and the corrsponding evolutions can be realized with generalized Galileon Lagrangians, in which there is not the ghost instability.
6 pages
References in corpus (21)
- Imperfect Dark Energy from Kinetic Gravity Braiding
- G-inflation: inflation driven by the Galileon field
- Galilean Genesis: an alternative to inflation
- Galileon Cosmology
- Galileon inflation
- Observational constraints on Galileon cosmology
- Primordial non-Gaussianity from the DBI Galileons
- Matter perturbations in Galileon cosmology
- Density perturbations in general modified gravitational theories
- Modified gravity a la Galileon: Late time cosmic acceleration and observational constraints
- Harrison--Zeldovich spectrum from conformal invariance
- Primordial non-Gaussianity from G-inflation
- Generalized Brans-Dicke theories
- Speedy sound and cosmic structure
- Near Scale Invariance with Modified Dispersion Relations
- Towards a Cosmological Dual to Inflation
- Seeding of Primordial Perturbations During a Decelerated Expansion
- Scale Invariance via a Phase of Slow Expansion
- On Primordial Density Perturbation and Decaying Speed of Sound
- Amplification of Curvature Perturbations in Cyclic Cosmology
- Primordial Perturbations During a Slow Expansion
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- Pulsar timing array observations as possible hints for nonsingular cosmology
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- Nanohertz gravitational waves from NEC violation in the early universe
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- Generating enhanced primordial GWs during inflation with intermittent violation of NEC and diminishment of GW propagating speed
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- Emergent universe: tensor perturbations within the CSL framework
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