evidence boundary
unknowntheoretical
An evidence atom is an inspectable support unit. It is not a finding by itself; it supports or challenges a finding through review.
frontiers / frontier
Evidence atom
back to sourcesevidence boundary
unknownAn evidence atom is an inspectable support unit. It is not a finding by itself; it supports or challenges a finding through review.
finding binding
boundThe recombination redshift z_rec ≈ 1100 and the baryon drag epoch z_drag ≈ 1000 define the epoch over which the photon-baryon sound speed and expansion rate determine the final sound horizon to 0.2% precision.
inspect finding →
source binding
source-boundvs_a755da4382740622
inspect source →
review context
unverified2 reviewable changes and 0 evaluation records target this atom or its bound objects.
Evidence statement
The recombination redshift z_rec ≈ 1100 and the baryon drag epoch z_drag ≈ 1000 define the epoch over which the photon-baryon sound speed and expansion rate determine the final sound horizon to 0.2% precision.
extraction method
manual_curation
support relation
unknown
condition refs
vcnd_ac89c92d6dbc3119
Caveats
events
vev_4062eb52cd64518bfinding.assertedManual finding added to frontier state
reviewer:will-blair · 2026-05-29
vev_770d6c2802c4a6a1finding.caveatedVerifier caution: Planck 2018 (1807.06209) gives z_rec ≈ 1090, z_drag ≈ 1060, not the round values 1100 and 1000. More critically, the claim of '0.2% precision' on sound horizon is unsupported—Planck 2018 reports 0.03% precision on angular acoustic scale θ_*, which does not directly translate to 0
reviewer:will-blair · 2026-05-29
reviewable changes
vpr_deb5dce90e33da8ffinding.addManual finding added to frontier state
applied · reviewer:will-blair · 2026-05-29
vpr_8ecfb3991d02c480finding.caveatVerifier caution: Planck 2018 (1807.06209) gives z_rec ≈ 1090, z_drag ≈ 1060, not the round values 1100 and 1000. More critically, the claim of '0.2% precision' on sound horizon is unsupported—Planck 2018 reports 0.03% precision on angular acoustic scale θ_*, which does not directly translate to 0
applied · reviewer:will-blair · 2026-05-29
evaluations
No evaluation rows are attached.