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Cosmological Constants and Observations: Supernova Tests and Dark Matter

Explore the constant cosmological tests through distant Supernovae, Quintessence, and primordial scalar fields. Learn about astronomical dark matter and scalar field relationships. The universe's geometry, observational evidence for non-vanishing cosmological constants, and Ricci tensor are discussed alongside closure density. Delve into universe stress-energy content, reacceleration, deceleration, light propagation, red-shift photon geodesic, cosmic microwave background, flat universe, dark energy, and non-baryonic dark matter in cosmological observations.

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Cosmological Constants and Observations: Supernova Tests and Dark Matter

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  1. Pierre Salati Université de Savoie & LAPTH • Constante cosmologique et observations : le test des supernovae SNeIa lointaines. • Quintessence et champ scalaire primordial. • Matière noire astronomique et champ scalaire.

  2. The geometry is described by the Robertson-Walker metric Scale factor Observational evidence for a non-vanishing cosmological constant.

  3. To summarize, the Ricci tensoris given by and

  4. or

  5. Closure density today

  6. and while The stress-energy content of the universe is described by

  7. reacceleration deceleration

  8. The propagation of light and the red-shift photon geodesic

  9. The cosmic microwave background COBE

  10. The universe is flat dark energy Non-baryonic dark matter Cosmological observations

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