#spatial curvature

topicspatial curvature

2 papers · 1 filter

astro-ph.CO2026

Inflation, Open Universes, and Dark Energy

Anton Chudaykin, Mikhail M. Ivanov, Renata Kallosh +3

The authors analyze how allowing a small negative spatial curvature and/or a time‑varying dark energy equation of state changes the inferred scalar spectral index nₛ from CMB and g…

gr-qc2026

The BGV Theorem and the Null Convergence Condition

William H. Kinney

The paper investigates how the Null Convergence Condition (NCC) and spatial curvature affect the applicability of the Borde‑Guth‑Vilenkin (BGV) theorem, showing that NCC and non‑po…