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A comment on Research suggests Big Bang may have taken place inside a black hole. Parent comment

Re:Research suggests Big Bang may have taken place inside a ... by mr_toad on Thursday June 12, 2025 @04:43PM (#44262993)
> with the cosmological horizon somehow (?) corresponding to the BH horizon as viewed from the outside.

That’s not mentioned in the summary. After inflation the event horizon would not exist.

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Re:Research suggests Big Bang may have taken place inside a ... by leiroigh on Friday June 13, 2025 @06:33AM (#44267288)
I have not really looked at the summary, opted to go straight to the source.

This identification happens in equations 31-34 on page 7f subsection "Cosmic Acceleration" in https://arxiv.org/abs/2505.23877

The justification looks super sketchy and hand-wavy to me, though, which I summarized as "somehow (?)".

"After inflation the event horizon would not exist."

Apparent cosmological constant viewed from the bouncing inside induces a cosmological horizon, which they identify with the black hole horizon viewed from the outside. Super elegant idea, but I don't buy that this is supposed to be true.

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