quantum fluctuations. gravity. structure in universe.

how stucture in the universe rises from the random nature of quantum fluctuations.

video below is very informative presentation, compact one — in just eight minutes is given current understanding of how stucture is rising from quantum fluctuations. but! listen to every word and all the sentences in the presentation carefully — don’t miss it that some parameters were put in by hand (in other words: made up), simply because we don’t know the correct values. i mean not in the beginning of the talk — about the ripples in the early universe — which he explains later where they came from, but in the end of the talk — the overall height of the ripples and “few other parameters”, like the amount of dark matter. it produced a theoretical graph, matching the graph to the actual measurements, resulting in “rather extraordinary fit”..

..wait a second.. hmm.. really?! i think it should be no surprise then.

anyway, regardless of some unknown precision, it’s a good presentation clarifying our current understanding, and the gaps in our understanding, how stucture in the universe rises from the random nature of quantum fluctuations..


https://www.youtube.com/watch?v=B4H1QPe6Bh4
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read my article about randomness..
https://youthextension.wordpress.com/2020/02/11/about-randomness/
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