How does the cosmological event horizon change the matter density?

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SUMMARY

The discussion centers on the implications of the cosmological event horizon producing a temperature at every point in space, akin to the radiation generated by black hole event horizons. Participants assert that this temperature indicates the presence of baryonic particles, which contribute to matter density in the universe. The conversation highlights the need for a formal derivation of this phenomenon, noting that the cosmological event horizon differs significantly from Schwarzschild and Rindler horizons. The potential impact of this temperature on matter density, although presumed to be minimal, could be substantial due to its pervasive nature across otherwise empty space.

PREREQUISITES
  • Understanding of cosmological event horizons
  • Familiarity with black hole thermodynamics
  • Knowledge of baryonic matter and its properties
  • Basic concepts of Hawking and Unruh radiation
NEXT STEPS
  • Research the mathematical derivation of temperature at cosmological event horizons
  • Explore the differences between Schwarzschild and Rindler horizons
  • Investigate the implications of baryonic matter in cosmology
  • Study the effects of Hawking and Unruh radiation on particle physics
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Astronomers, theoretical physicists, and cosmologists interested in the relationship between event horizons and matter density in the universe.

Mike2
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I'm told that the cosmological event horizon produces a temperature at every point of space similar to how a black hole event horizon produces a radiation near its surface. If there exists a temperature, then there must be particles to produce that temperature. They must be baryons since normal matter could feel that temperature. So the question is how much entra matter is produced by the cosmic event horizon? I imagine it must be very small, but since it occupies all of otherwise empty space, its contribution might be considerable. Any thoughts?
 
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Mike2 said:
I'm told that the cosmological event horizon produces a temperature at every point of space similar to how a black hole event horizon produces a radiation near its surface.
I have read this several times also, but I have never seen a formal derivation of this. The cosmological event horizon is very different from the Schwarzschild or Rindler horizons. I think that this result, if it is indeed and established one, will rise some problems of interpretation.

Mike2 said:
If there exists a temperature, then there must be particles to produce that temperature. They must be baryons since normal matter could feel that temperature.
Hawking and Unruh radiation involve all fields, boson as well as fermions.
 
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