REVIEW 3 cited by
Evolution of non-linear cosmological perturbations
Not yet reviewed by Pith; the record is open.
This paper has not been read by Pith yet. Machine review is queued; the pith claim, tier, and objections will appear here once it completes.
SPECIMEN: schema-true, not a live event
T0 review · schema-true
One-sentence machine reading of the paper's core claim.
pith:XXXXXXXX · record.json · timestamp
Signed reviews
read the original abstract
We define fully non-perturbative generalizations of the uniform density and comoving curvature perturbations, which are known, in the linear theory, to be conserved on sufficiently large scales for adiabatic perturbations. Our non-linear generalizations are defined geometrically, independently of any coordinate system. We give the equations governing their evolution on all scales. Also, in order to make contact with previous works on first and second order perturbations, we introduce a coordinate system and show that previous results can be recovered, on large scales, in a remarkably simple way, after restricting our definitions to first and second orders in a perturbative expansion.
Forward citations
Cited by 3 Pith papers
-
Not R Kurvature: Beating Large-Scale White Noise
Kurvature's large-scale white noise is confined to extrinsic shear and expansion; the curvature mode R receives no infrared-divergent contribution from hard-hard modes, invalidating the BIS-II CMB prediction.
-
The Fate of Large Scale White Noise in Second-Order Cosmological Perturbation Theory
White noise in the second-order kurvature density is real, but it is not inherited by the comoving curvature perturbation as an infrared pole, invalidating the k_BH bound on the small-scale primordial power spectrum.
-
Friction in Stochastic Inflation
Adding a constant drift to time-reversed stochastic inflation in a flat potential yields an exact curvature distribution with exponential tails; forward and reverse delta-N formalisms differ by a factor of two in the ...
Discussion (0). Continue with ORCID to comment.