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Many physicists assume we must live in a multiverse - Forum

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Forum » Main » Science, Astronomy, Nature » Many physicists assume we must live in a multiverse
Many physicists assume we must live in a multiverse
ManuDate: Tuesday, 14-November-2023, 11:28 PM | Message # 1
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Many physicists assume we must live in a multiverse – but their basic maths may be wrong

One of the most startling scientific discoveries of recent decades is that physics appears to be fine-tuned for life. This means that for life to be possible, certain numbers in physics had to fall within a certain, very narrow range.

One of the examples of fine-tuning which has most baffled physicists is the strength of dark energy, the force that powers the accelerating expansion of the universe. If that force had been just a little stronger, matter couldn’t clump together. No two particles would have ever combined, meaning no stars, planets, or any kind of structural complexity, and therefore no life.

If that force had been significantly weaker, it would not have counteracted gravity. This means the universe would have collapsed back on itself within the first split-second – again meaning no stars or planets or life. To allow for the possibility of life, the strength of dark energy had to be, like Goldilocks’s porridge, “just right”.

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Read more/full article/source - https://theconversation.com/many-ph....-216106
 
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