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Hawking's final multiverse theory published


Posted on Wednesday, 2 May, 2018 | Comment icon 47 comments

Hawking's final work is now available. Image Credit: CC BY 2.0 Lwp Kommunikacio / Flickr
Stephen Hawking's final theory of the cosmos was completed shortly before he passed away in March.
Published on Wednesday in the Journal of High Energy Physics, the paper was written as part of a collaboration between Hawking and physicist Thomas Hertog of the Catholic University of Leuven.

It proposes that reality is made up of multiple universes that may be very similar to our own.

Following the Big Bang, some scientists believe that there were repeat bursts of 'cosmic inflation' leading to the formation of numerous pocket universes with radically different laws of physics.

Hawking and Hertog however have challenged this idea by instead suggesting that these multiple universes may actually be very similar and thus not much different to our own universe.

"In the old theory there were all sorts of universes: some were empty, others were full of matter, some expanded too fast, others were too short-lived.," said Hertog. "There was huge variation."

"The mystery was why do we live in this special universe where everything is nicely balanced in order for complexity and life to emerge? This paper takes one step towards explaining that mysterious fine tuning. It reduces the multiverse down to a more manageable set of universes which all look alike."

"Stephen would say that, theoretically, it's almost like the universe had to be like this. It gives us hope that we can arrive at a fully predictive framework of cosmology."

Source: The Guardian | Comments (47)

Tags: Stephen Hawking

Recent comments on this story
Comment icon #38 Posted by pallidin on 5 May, 2018, 9:11
Yes. Due to how entanglement works, purposeful information interchange can not occur.  
Comment icon #39 Posted by danydandan on 5 May, 2018, 9:21
That's the point why faster than light communication is not possible.
Comment icon #40 Posted by pallidin on 5 May, 2018, 9:33
I can't speak for potentially advanced physics, but I get your point.
Comment icon #41 Posted by pallidin on 5 May, 2018, 9:44
I must rest now... love all...
Comment icon #42 Posted by pallidin on 6 May, 2018, 7:14
To make matters even more interesting, it has been suggested (not proven) that if our universe was born from a "singularity", that everything is powerfully "entangled" on some unknown, fundamental level.
Comment icon #43 Posted by Noxasa on 15 May, 2018, 14:46
I believe the double-slit (and its variations) show that quantum events do not collapse down to a certainty unless observed by a conscious observer.  And that all quantum probabilities prior to observation all exist at the same time until observed as shown through the delayed double-slit experiment and represented in Schrodinger's cat thought experiment.  Quantum scale events do not collapse down to a reality unless they are observed.  I'm just suggesting that other universes, if they exist, are the result of the collapsing of these quantum probabilities down to a reality, which require consci... [More]
Comment icon #44 Posted by Noxasa on 18 May, 2018, 20:24
I've often thought that every atom, every particle, every everything is quantumly entangled with extra-dimensional elements.  Thus, our ordered brains, memories and ideas could give structure to an unseen extra-dimensional entity...perhaps a concept of a soul?  Something to think about I guess.
Comment icon #45 Posted by Skulduggery on 18 May, 2018, 23:45
But, by that logic, wouldn't it be likely that the boundaries eventually collapse? A bit rhetorical. I'm actually not sure. What happens then? Or, is everything completely disconnected? There are large gaps in the understanding of these things we don't know. It's purely hypothetical.
Comment icon #46 Posted by StarMountainKid on 18 May, 2018, 23:56
I don't know, of course, but I would think universes would be disconnected from each other, as space and time only exist 'within' universes, so to speak. there is no 'outside' of a universe, unless there would be some sort of space-time bridge between universes. I don't see how that could come to exist.  
Comment icon #47 Posted by Skulduggery on 19 May, 2018, 1:16
That is exactly why that needs to be explored. Nobody even knows how these things interact, if at all. Or, what's beyond the pale. It is completely based on hypothetical models, and each one offers hints, but nothing's known. What seems more likely doesn't mean too much. Universes, man, they're scary. I've always had a fear that the universe would just pop one day like a giant bubble.


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