DESI Dark Energy Time Evolution is Recovered by Cosmologically Coupled Black Holes

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Conflicts of Interest

Identified Weaknesses

Rating Explanation

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Paper Summary

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Are Black Holes Dark Energy? A New Theory Tested with Early Universe Sound Waves

This study proposes that dark energy could be explained by cosmologically coupled black holes, which grow in mass in sync with the universe's expansion. They found that this model generally agrees with data from the Dark Energy Spectroscopic Instrument (DESI) on sound waves in the early universe, but there are differences at low redshifts. This theory could potentially explain the "missing baryon" problem and low neutrino mass estimates from DESI.

Possible Conflicts of Interest

None identified

Identified Weaknesses

Background-order analysis

The study is conducted at background-order, meaning it uses a simplified model of the universe that does not account for all the complexities of real observations. The conclusions may not hold up when more detailed analyses are performed.

Reliance on untested hypothesis

The model heavily relies on an untested hypothesis that black holes can act like dark energy through cosmological coupling. If this hypothesis is incorrect, the model's predictions are unreliable.

Discrepancy with observations at low redshifts

The proposed model does not perfectly match existing observations at low redshifts (z ≤ 0.2). This discrepancy suggests that the model may be incomplete or incorrect.

Rating Explanation

This study presents an interesting theoretical model with some promising results but also significant limitations. It relies heavily on a speculative hypothesis and does not fully align with current observations at low redshifts. The methodology is sound, but the simplified analysis prevents a stronger conclusion.

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