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Pierre Salati Université de Savoie & LAPTH

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. The geometry is described by the Robertson-Walker metric. Scale factor.

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Pierre Salati Université de Savoie & LAPTH

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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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