Feeds

Loopy quantums reveal successive universes

Big Bang was Big Bounce

Secure remote control for conventional and virtual desktops

So it turns out that the universe didn't begin with a big bang, after all. No. It was a big boing, the result of a previous universe contracting before bouncing back out to become ours. This is the latest news from the mutantly clever quantum cosmologists at Penn State university.

Credit: Martin Bojawald, Penn State

Spreading through a bounce: A state that initially has small

fluctuations (left) bounces and develops larger fluctuations (right).

Time proceeds along the horizontal axis, with the volume plotted

vertically. Credit: Martin Bojawald, Penn State

The boffins have have used a piece of mathematical trickery called Quantum Loop Theory to go where no one has gone before: into the singularity that classical cosmology says preceded the Big Bang. What they found was that the singularity actually wasn't.

Using quantum loop theory, they traced time backwards to its beginning. Where Einstein's theory of general relativity predicts a singularity, quantum loop theory does not. The universe, they say, did not spring forth from a place where infinite density and energy inhabited zero volume.

"Einstein's Theory of General Relativity does not include the quantum physics that you must have in order to describe the extremely high energies that dominated our universe during its very early evolution," explains Martin Bojowald, lead author and assistant professor of physics at Penn State."But we now have Loop Quantum Gravity, a theory that does include the necessary quantum physics."

He explains that the theory's equations continue to produce valid mathematical results past the point of the classical Big Bang, giving scientists a window into the time before the Big Bounce, and into the previous universe.

In order to explore the physics of the other universe, Bojowald developed a "more precise model" within quantum loop gravity. This revealed that some parameters in the equation are complimentary, making it impossible to learn too much about the earlier universe using this model.

His revised calculations also showed that some parameters that exist in the previous universe do not exist in ours, meaning this previous universe would not have been identical to our own.

He said: "The eternal recurrence of absolutely identical universes would seem to be prevented by the apparent existence of an intrinsic cosmic forgetfulness". ®

Next gen security for virtualised datacentres

More from The Register

next story
Vulture 2 takes a battering in 100km/h test run
Still in one piece, but we're going to need MORE POWER
Boffins ID freakish spine-smothered prehistoric critter: The CLAW gave it away
Bizarre-looking creature actually related to velvet worms
TRIANGULAR orbits will help Rosetta to get up close with Comet 67P
Probe will be just 10km from Space Duck in October
CRR-CRRRK, beep, beep: Mars space truck backs out of slippery sand trap
Curiosity finds new drilling target after course correction
ANU boffins demo 'tractor beam' in water
The current state of the art, apparently
China to test recoverable moon orbiter
I'll have some rocks and a moon cheese pizza please, home delivery
What does a flashmob of 1,024 robots look like? Just like this
Sorry, Harvard, did you say kilobots or KILLER BOTS?
NASA's rock'n'roll shock: ROLLING STONE FOUND ON MARS
No sign of Ziggy Stardust and his band
Why your mum was WRONG about whiffy tattooed people
They're a future source of RENEWABLE ENERGY
prev story

Whitepapers

5 things you didn’t know about cloud backup
IT departments are embracing cloud backup, but there’s a lot you need to know before choosing a service provider. Learn all the critical things you need to know.
Implementing global e-invoicing with guaranteed legal certainty
Explaining the role local tax compliance plays in successful supply chain management and e-business and how leading global brands are addressing this.
Build a business case: developing custom apps
Learn how to maximize the value of custom applications by accelerating and simplifying their development.
Rethinking backup and recovery in the modern data center
Combining intelligence, operational analytics, and automation to enable efficient, data-driven IT organizations using the HP ABR approach.
Next gen security for virtualised datacentres
Legacy security solutions are inefficient due to the architectural differences between physical and virtual environments.