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Astronomy and Cosmology
Cosmology
Two numerical questions about inflation and the flatness problem
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[QUOTE="KayLepton, post: 5462876, member: 572137"] Good day to you all I just started studying cosmology recently using several book and especially using TASI Lectures on Inflation([URL]https://arxiv.org/abs/0907.5424[/URL]) On page 25 the fine tuning problem of the flatness is introduced with conditions as |Ω(BBN)-1|≤ ο(10[SUP]-16[/SUP]) |Ω(GUT)-1|≤ ο(10[SUP]-55[/SUP]) |Ω(pl)-1|≤ ο(10[SUP]-61[/SUP]) My first question is how to derive this condition The second would be page 34 where the number of inflationary e-folds were introduced and simply put that it must be more than 60 to solve the flatness and horizon problems I was unable to derive this also Furthermore I suppose that these conditions are derived from observations It would be great if I could calculate these conditions a bit more exact using recent data... Thank you for your time [/QUOTE]
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Astronomy and Cosmology
Cosmology
Two numerical questions about inflation and the flatness problem
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