Posted on 08/04/2006 4:26:21 AM PDT by PatrickHenry
The question of what happened before the Big Bang long has frustrated cosmologists, both amateur and professional.
Though Einstein's theory of general relativity does an excellent job of describing the universe almost back to its beginning, near the Big Bang matter becomes so dense that relativity breaks down, says Penn State physicist Abhay Ashtekar. "Beyond that point, we need to apply quantum tools that were not available to Einstein."
Now Ashtekar and two of his post-doctoral researchers, Tomasz Pawlowski and Parmpreet Singh, have done just that. Using a theory called loop quantum gravity, they have developed a mathematical model that skates right up to the Big Bang -- and steps through it. On the other side, Ashtekar says, exists another universe with space-time geometry similar to our own, except that instead of expanding, it is shrinking. "In place of a classical Big Bang, there is in fact a quantum Bounce," he says.
Loop quantum gravity, one of the leading approaches to the unification of general relativity with quantum physics, was pioneered at the Institute of Gravitational Physics and Geometry at Penn State, which Ashtekar directs. The theory posits that space-time geometry itself has a discrete "atomic" structure, Ashtekar explains. Instead of the familiar space-time continuum, the fabric of space is made up of one-dimensional quantum threads. Near the Big Bang, this fabric is violently torn, and these quantum properties cause gravity to become repulsive, rather than attractive.
While the idea of another universe existing prior to the Big Bang has been proposed before, he adds, this is the first mathematical description that systematically establishes its existence and deduces its space-time geometry.
"Our initial work assumes a homogenous model of our universe," Ashtekar acknowledges. "However, it has given us confidence in the underlying ideas of loop quantum gravity. We will continue to refine the model to better portray the universe as we know it and to better understand the features of quantum gravity."
***
Abhay Ashtekar is holder of the Eberly family chair in physics and director of the Institute for Gravitational Physics and Geometry in the Eberly College of Science. He can be reached at ava1@psu.edu.
The finding reported above was published in Physical Review Letters in May 2006. The research was sponsored by the National Science Foundation, Alexander von Humboldt Foundation, and the Penn State Eberly College of Science.
There was dancing!
NO, what I can't stand and will NOT stand for is 99% of biologist trying to pass evolution off as fact when it's just conjecture, speculation, best guess hypothesis.
Witnessing bullsh!t is witnessing bullsh!t, there is no other way to describe it.
And the 'Desperate For Attention' Troll.
"NO, what I can't stand and will NOT stand for is 99% of biologist trying to pass evolution off as fact when it's just conjecture, speculation, best guess hypothesis."
Like I said, it burns you that the people who actually matter in this debate, working scientists, overwhelmingly find your position laughable.
"And the 'Desperate For Attention' Troll."
You're repeating yourself.
You're repeating yourself.
Yeah, I realized it was redundant after I posted. But I had a particularly desperate troll in mind.
Do you seriously think your able to convolute a belief as fact and twist reality? Having faith is not claiming something is a FACT, it's BELIEVING something is fact.
Evolution claims it's theory is FACT, not that it believes it's fact.
Nice try though...
"Yeah, I realized it was redundant after I posted. But I had a particularly desperate troll in mind."
I heard that echo too.
Actually, I believe God, Infinite all, performed the ultimate sacrifice by entering Infinite non-existance, Died for an infinitesimal point (for us) to create the Universe full of unlimited finites. ("bang") What a stinkin' gamble. What if infinite All and infinite Null cancelled each other out and all that remained was the "child", the Universe? That's some sex.
But what I believe is Infinite Father became greater than Infinite mind & structure (pre-Universe creation state), by now also occupying (communion) those unlimited number of finite ones over all time (just created by this ultimate sacrifice).
Hey, didn't the Son of God mimic that by dying only to become the Spirit to fill all those finite structures (beings)?
What a copy cat.
Like Father, like Son.
Atheist????? Are you still playing that BS card?
BWAAAAAAAAAAAAAAAAAAAAAAAAAHAHAHAHA!
Pull the other one now Mr. Creationist-Wannabe!?
People who actually matter in this debate???
Doesn't get much more pitiful than that line. I think I'll just end my discussion with you right here...
"The Warden" said that, to be precise ......
Luke said it too, just before they shot him.
"People who actually matter in this debate???"
Yes, working biologists, who overwhelmingly reject creationism/ID.
"Doesn't get much more pitiful than that line. I think I'll just end my discussion with you right here..."
Best you did that while you are behind. That way you won't have to explain how Darwin is connected with the Big Bang theory when he died decades before anybody thought of the Big Bang theory.
I'd run away if I was doing as poorly as you too.
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