How to Independently Determine the Proportion of Dark Energy Density?

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Discussion Overview

The discussion revolves around the methods for independently determining the proportion of dark energy density relative to the total energy density of the universe. Participants explore theoretical approaches and existing literature, as well as clarify concepts related to dark energy density.

Discussion Character

  • Exploratory, Technical explanation, Conceptual clarification

Main Points Raised

  • One participant inquires about alternative methods to calculate the proportion of dark energy density, suggesting a desire for independence from the formula 1 - (Ωmatter + Ωdark matter).
  • Another participant references a specific paper by M. Kowalski et al. that may provide insights or constraints related to cosmological measurements.
  • Some participants question the terminology used regarding "proportion of dark energy," noting that its density is constant and suggesting that it is a fixed fraction of the total energy density.
  • A later reply indicates an assumption of ΩΛ in relation to the discussion of dark energy density.

Areas of Agreement / Disagreement

Participants express differing interpretations of the concept of dark energy density and its proportion, indicating a lack of consensus on terminology and understanding. The discussion remains unresolved regarding alternative methods for determining dark energy density.

Contextual Notes

There are potential limitations in the assumptions made about dark energy density being constant and the implications of using specific cosmological parameters. The discussion does not resolve these aspects.

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Is there a way to independently determine the proportion of dark energy density to total energy density of the universe apart from using 1 -(Ωmatterdark matter )?
 
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What do you mean by saying a "proportion of dark energy"? It's density is constant and a tenth of it too.
 
Last edited:
timmdeeg said:
What do you mean by saying a "proportion of dark energy"? It's density is constant and a tenth of it too.
From what was stated, I assume ΩΛ.
 

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