Universe "started" with a size of a Plank size, inflation lasted 10^-35 second, and inflated the universe by a factor of 10^50 in that time frame.
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Sure, a Planck nugget of low entropy would be v = 4/3 pi R^3; where R = .5E-35 meter is the radius of the nugget with a Planck diameter. Planck's minimum length = 10^-35 meters.
So the U-verse, after expanding 10^50 fold, would be V = 10^50 v = (4/3)*pi()*(.5E-35)*10^50 = 2.0944E+15 m^3 assuming the U-verse expanded uniformly in all directions (which it apparently did not according to recent WAGs). By comparison, our Sun is 1.4E18 km^3 * (1E3)^3 m^3/km^3 = 1.4E27 m^3. So the universe, at 2.0944E+15/1.4E27 = 1.496E-12 the volume of our Sun, was still quite small after the inflationary epoch.
Note, how long it took to expand that distance is not germane as we know the expansion factor. As you might recall, from Cosmos, the n-fold expansion ranges from !0^30 to 10^100 in the current WAGs. The variance depends on what one assumes for the interval of the Higgs like field collapse to zero level that pushed the U-verse outward with negative gravity. A faster collapse yields a bigger expansion, a slower one gives a smaller expansion.
So the U-verse, after expanding 10^50 fold, would be V = 10^50 v = (4/3)*pi()*(.5E-35)*10^50 = 2.0944E+15 m^3 assuming the U-verse expanded uniformly in all directions (which it apparently did not according to recent WAGs). By comparison, our Sun is 1.4E18 km^3 * (1E3)^3 m^3/km^3 = 1.4E27 m^3. So the universe, at 2.0944E+15/1.4E27 = 1.496E-12 the volume of our Sun, was still quite small after the inflationary epoch.
Note, how long it took to expand that distance is not germane as we know the expansion factor. As you might recall, from Cosmos, the n-fold expansion ranges from !0^30 to 10^100 in the current WAGs. The variance depends on what one assumes for the interval of the Higgs like field collapse to zero level that pushed the U-verse outward with negative gravity. A faster collapse yields a bigger expansion, a slower one gives a smaller expansion.
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Though I' might add, if we assume a 1E100 fold expansion, rather than the 1E50 fold you gave us, the volume of the universe would have expanded to 1.496E+38 time the volume of the Sun. So what we assume as the n-fold expansion, 1E30 to 1E100, makes a huge difference in the size at the end.
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You would, at the least, need the mass or energy equivalent.
And of course, there is no guarantee that there would ever be an end of the inflation phase.
And of course, there is no guarantee that there would ever be an end of the inflation phase.
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its not possible in our current mind frame