CERN scientists eye parallel universe breakthrough

GENEVA Wed Oct 20, 2010 11:21am EDT

The Carina Nebula, located 7,500 light-years away from Earth, in an image taken by the NASA Hubble Space Telescope in February 2010. REUTERS/NASA/Handout

The Carina Nebula, located 7,500 light-years away from Earth, in an image taken by the NASA Hubble Space Telescope in February 2010.

Credit: Reuters/NASA/Handout

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GENEVA (Reuters) - Physicists probing the origins of the cosmos hope that next year they will turn up the first proofs of the existence of concepts long dear to science-fiction writers such as hidden worlds and extra dimensions.

And as their Large Hadron Collider (LHC) at CERN near Geneva moves into high gear, they are talking increasingly of the "New Physics" on the horizon that could totally change current views of the universe and how it works.

"Parallel universes, unknown forms of matter, extra dimensions... These are not the stuff of cheap science fiction but very concrete physics theories that scientists are trying to confirm with the LHC and other experiments."

This was how the "ideas" men and women in the international research center's Theory Group, which mulls over what could be out there beyond the reach of any telescope, put it in CERN's staff-targeted Bulletin this month.

As particles are collided in the vast underground LHC complex at increasingly high energies, what the Bulletin article referred to informally as the "universe's extra bits" -- if they do exist as predicted -- should be brought into computerized, if ephemeral, view, the theorists say.

Optimism among the hundreds of scientists working at CERN -- in the foothills of the Jura mountains along the border of France and Switzerland -- has grown as the initially troubled $10 billion experiment hit its targets this year.

PROTON COLLISIONS

By mid-October, Director-General Rolf Heuer told staff last weekend, protons were being collided along the 27-km (16.8 mile) subterranean ring at the rate of 5 million a second -- two weeks earlier than the target date for that total.

By next year, collisions will be occurring -- if all continues to go well -- at a rate producing what physicists call one "inverse femtobarn," best described as a colossal amount, of information for analysts to ponder.

The head-on collisions, at all but the speed of light, recreate what happened a tiny fraction of a second after the primeval "Big Bang" 13.7 billion years ago which brought the known universe and everything in it into being.

Despite centuries of increasingly sophisticated observation from planet Earth, only 4 per cent of that universe is known -- because the rest is made up of what have been called, because they are invisible, dark matter and dark energy

Billions of particles flying off from each LHC collision are tracked at four CERN detectors -- and then in collaborating laboratories around the globe -- to establish when and how they come together and what shapes they take.

The CERN theoreticians say this could give clear signs of dimensions beyond length, breadth, depth and time because at such high energy particles could be tracked disappearing -- presumably into them -- and then back into the classical four.

Parallel universes could also be hidden within these dimensions, the thinking goes, but only in a so-called gravitational variety in which light cannot be propagated -- a fact which would make it nearly impossible to explore them.

(Editing by Jonathan Lynn)

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Comments (42)
bcrawf wrote:
Oh, dear, why do scientists resort to hype? (It damages their credibility.) If “another universe” were discovered, it would necessarily be part of our universe, since, otherwise, we could not have detected or observed it.

Oct 20, 2010 1:06pm EDT  --  Report as abuse
iamazdavid wrote:
“The CERN theoreticians say this could give clear signs of dimensions beyond length, breadth, depth and time because at such high energy particles could be tracked disappearing — presumably into them — and then back into the classical four.”

It’s not nice to fool Mother Nature…

Oct 20, 2010 2:09pm EDT  --  Report as abuse
Bob9999 wrote:
The article misconstrues the concepts that it attempts to explain. Scientists are not entertaining the possible of “parallel universes.” They are instead testing the theory that the universe that we are currently familiar with should be understood not as a four-dimensional universe (three spatial dimensions and one temporal dimension) but instead as an 11-dimensional universe. While we do not have the ability directly to perceive dimensions other than the three spatial dimensions and one temporal dimension, the world of matter an energy that we directly perceive extends to these other dimensions. For example, one of the oddities of physics is that subatomic particles do not always behave like particles but instead frequently behave like waves. In particular, the exact location of any given subatomic particle cannot be defined with precision but is better understood as a probability wave, a distribution of locations where the particle is likely to be, very much like a bell curve. One solution to this is that some of the extra six dimensions take the form of what might be analogized as being small pockets around each subatomic particle. The location of the subatomic particle in the three spatial dimensions that we can perceive cannot be defined with precision, because the subatomic particle is rattling around in one of these pockets. That is what the scientists are investigating, not “parallel universes.”

Oct 20, 2010 2:14pm EDT  --  Report as abuse
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