Now, and the Flow of Time

Question

Referee this paper: arXiv:1606.07975 by Richard A. Muller, Shaun Maguire

Please use comments to point to previous work in this direction, and reviews to referee the accuracy of the paper. Feel free to edit this submission to summarise the paper (just click on edit, your summary will then appear under the horizontal line)

(Is this your paper?)

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Comments

Just by reading the abstract: "The progression of time can be understood by assuming that the Hubble expansion takes place in 4 dimensions rather than in 3. The flow of time consists of the continuous creation of new moments, new nows, that accompany the creation of new space. " I see that expansion and creation of new moments and new spaces implies the time evolution. For that it is not necessary to have 4 dimensions; our time-dependent world will do ;-)

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It's a little more subtle ... take 3 min to see the Pr Muller explaining his theory in a video , more details in the paper :)

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@igael: The video is fun indeed. But fun is not serious by definition.

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It's a theory. They say the time dimension is explicitely in Hubble expansion and that makes the flow of time we know. To check the idea , they suggest to use the only other known occurence of space creation , in a black hole coealescence process. There are more strange theories in fundamental physics. I suspect this paper to be a little speculative ( :) ) but it is original. While time is local, it's a good idea to wonder from where comes the time of a new piece of space and what are its properties or to understand well why it is a bad question.