On Precision Measurement of the Mean Curvature
| dc.creator | Knox, Lloyd | |
| dc.date | 2005-03-18 | |
| dc.date | 2006-01-10 | |
| dc.date.accessioned | 2026-07-07T10:43:13Z | |
| dc.date.available | 2026-07-07T10:43:13Z | |
| dc.description | Very small mean curvature is a robust prediction of inflation worth rigorous checking. Since current constraints are derived from determinations of the angular-diameter distance to the CMB last-scattering surface, which is also affected by dark energy, they are limited by our understanding of the dark energy. Measurements of luminosity or angular-diameter distances to redshifts in the matter-dominated era can greatly reduce this uncertainty. With a one percent measurement of the distance to z=3, combined with the CMB data expected from Planck, one can achieve sigma(Ω_k h^2) \sim 10^{-3}. A non-zero detection at this level would be evidence against inflation or for unusually large curvature fluctuations on super-Hubble scales. | |
| dc.description | 7 pages accepted for publication in PRD. Final published version with more on how the curvature constraints depend on the technique used for measuring distance | |
| dc.identifier | https://arxiv.org/abs/astro-ph/0503405 | |
| dc.identifier | http://arxiv.org/abs/astro-ph/0503405 | |
| dc.identifier | Phys.Rev.D73:023503,2006 | |
| dc.identifier | doi:10.1103/PhysRevD.73.023503 | |
| dc.identifier.uri | http://salesiana.dossiersoluciones.com/handle/123456789/182165 | |
| dc.subject | Astrophysics | |
| dc.title | On Precision Measurement of the Mean Curvature | |
| dc.type | text |