In a flat universe with dark energy (cosmological constant) and normal matter like ours, the sum of the density parameter for matter (Omega m) with the density parameter for the cosmological constant (Omega lambda) at the present time equals 1.(adsbygoogle = window.adsbygoogle || []).push({});

If Omega lambda is larger then a certain value the size of the particle horizon is larger then the size of the cosmological event horizon. What does this mean? What happens in a Universe where the particle horizon is bigger then the event horizon?

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# Particle and event horizons

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