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Thread: Inflationary Cosmology

  1. #1 Inflationary Cosmology 
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    If I'm correct, inflationary cosmology is related to the Big Bang and the acceleration of the expanding universe. What exactly does it explain, and how might it suggest that we live in a multiverse?
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  2. #2  
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    Quote Originally Posted by Scheuerf View Post
    If I'm correct, inflationary cosmology is related to the Big Bang and the acceleration of the expanding universe. What exactly does it explain, and how might it suggest that we live in a multiverse?
    Inflation was proposed by Alan Guth to explain why the cosmic microwave background is so exquisitely isotropic. How distant parts of the universe could be in equilibrium with each other was a puzzle that BB theorists found difficult to resolve. Guth's idea was that sudden inflation would allow a small universe (where all parts are in equilibrium with each other) to become a big universe with all the parts acting as if they are still in equilibrium.

    Now, as far as links with multiverses is concerned, when one calculates with mathematical models of inflation, the finding is that inflation can act with a distribution of time constants over a distribution of volumes, leading to a fractal-like distribution of multiverses. These are theoretical predictions, but Guth and Andrei Linde (another prominent inflation theorist) maintain that, since their theories are "disciplined" by a wealth of observational evidence (albeit indirect), the notion of multiverses can't be dismissed out of hand.
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