A confirmation of agreement of different approaches for scalar gauge-invariant metric perturbations during inflation
arXiv:0809.5280 · doi:10.1140/epjc/s10052-009-0873-x
Abstract
We revisit an extension of the well-known formalism for gauge-invariant scalar metric fluctuations, to study the spectrums for both, the inflaton and gauge invariant (scalar) metric fluctuations in the framework of a single field inflationary model where the quasi-exponential expansion is driven by an inflation which is minimally coupled to gravity. The proposal here examined is valid also for fluctuations with large amplitude, but for cosmological scales, where vector and tensor perturbations can be neglected and the fluid is irrotacional.
arXiv commentVersion accepted in EPJC with new title. 11 pages, no figures
References in corpus (16)
- Brane Inflation
- Warm Inflation
- Second-Order Cosmological Perturbations from Inflation
- A First Principles Warm Inflation Model that Solves the Cosmological Horizon/Flatness Problems
- Stochastic Inflation:The Quantum Phase Space Approach
- Gauge-invariant Formulation of the Second-order Cosmological Perturbations
- Decoherence of quantum wavepackets due to interaction with conformal spacetime fluctuations
- Inflationary cosmology from STM theory of gravity
- Cosmological influence of super-Hubble perturbations
- Second Order Gauge-Invariant Perturbations during Inflation
- Fresh inflation: a warm inflationary model from a zero temperature initial state
- Noncompact KK theory of gravity: stochastic treatment for a nonperturbative inflaton field in a de Sitter expansion
- CMB temperature anisotropies from third order gravitational perturbations
- Space Time Matter inflation
- Fresh inflation and decoherence of super Hubble fluctuations
- Decoherence of gauge-invariant metric fluctuations during inflation