Posted on 12/28/2018 10:08:50 AM PST by ETL
Uppsala University researchers have devised a new model for the universe – one that may solve the enigma of dark energy.
Their new article, published in Physical Review Letters, proposes a new structural concept, including dark energy, for a universe that rides on an expanding bubble in an additional dimension.
We have known for the past 20 years that the universe is expanding at an ever accelerating rate. The explanation is the "dark energy" that permeates it throughout, pushing it to expand. Understanding the nature of this dark energy is one of the paramount enigmas of fundamental physics.
It has long been hoped that string theory will provide the answer. According to string theory, all matter consists of tiny, vibrating "stringlike" entities. The theory also requires there to be more spatial dimensions than the three that are already part of everyday knowledge. For 15 years, there have been models in string theory that have been thought to give rise to dark energy. However, these have come in for increasingly harsh criticism, and several researchers are now asserting that none of the models proposed to date are workable.
In their article, the scientists propose a new model with dark energy and our universe riding on an expanding bubble in an extra dimension. The whole universe is accommodated on the edge of this expanding bubble. All existing matter in the universe corresponds to the ends of strings that extend out into the extra dimension. The researchers also show that expanding bubbles of this kind can come into existence within the framework of string theory. It is conceivable that there are more bubbles than ours, corresponding to other universes.
The Uppsala scientists' model provides a new, different picture of the creation and future fate of the universe, while it may also pave the way for methods of testing string theory.
Explore further: Is dark energy even allowed in string theory?
More information: Souvik Banerjee et al. Emergent de Sitter Cosmology from Decaying Anti–de Sitter Space, Physical Review Letters (2018). DOI: 10.1103/PhysRevLett.121.261301
Journal reference: Physical Review Letters 
Provided by: Uppsala University
The Hubble Ultra-Deep Field image shows some of the most remote galaxies visible with present technology,
each consisting of billions of stars. [everything except the objects with "spikes" (stars in our own galaxy) is a galaxy]
Too boggling for me...
I theorize that our universe is actually an atom and we are part of a giant chair...................................
I’d like to know how God did it too!
This can join all the hundreds of other models.
“In their article, the scientists propose a new model with dark energy and our universe riding on an expanding bubble in an extra dimension. The whole universe is accommodated on the edge of this expanding bubble.”
So maybe the Earth really is flat.
I need a nap...
Or as Molly Hatchet put it...
"Been flirtin' with disaster, Ya'll know what I mean."
""Turtles all the way down" is an expression of the problem of infinite regress. The saying alludes to the mythological idea of a World Turtle that supports the earth on its back. It suggests that this turtle rests on the back of an even larger turtle, which itself is part of a column of increasingly large turtles that continues indefinitely (i.e., "turtles all the way down")."
There is one model that fits our understanding of the Universe very well.
That theory is.... The Universe is Infinite.
Stars or just clusters of atom of something bigger than us? I mean what surrounds atoms, dark matter?
If dark nrg and dark matter permeate our universe ...is it also a part of the matter that makes up our brains? If so...could those internal “dark” forces affect our thinking and reasoning? How could one trust their own cogitations if this is true?
“in an additional dimension”
That should be good for a few billion for a new particle accelerator.
The solution.... It is not just 'gravity' that holds galaxies together. It is Electro-magnetic force that keeps galaxies together and that determines the form of galaxies, and indeed the entire Universe.
The Universe is simply expanding. It is not expanding into anything at all.
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