Sciences

What happened before Big Bang?

What happened before creation. Or how was creation "created" is an interesting question that scientists and spiritualists have tried to tackle their entire lives. Here is another attempt at that. This one says that it is extremely difficult to pin point the properties of the "pre-universe" because of COSMIC FORGETFULNESS! Nice term. Basically what he is saying is something akin to Hiesenberg’s assertion. Here is more detail:

As described by Einstein’s Theory of General Relativity, the origin of the Big Bang is a mathematically nonsensical state — a "singularity" of zero volume that nevertheless contained infinite density and infinitely large energy. Now, however, Bojowald and other physicists at Penn State are exploring territory unknown even to Einstein — the time before the Big Bang — using a mathematical time machine called Loop Quantum Gravity.

This theory, which combines Einstein’s Theory of General Relativity with equations of quantum physics that did not exist in Einstein’s day, is the first mathematical description to systematically establish the existence of the Big Bounce and to deduce properties of the earlier universe from which our own may have sprung. For scientists, the Big Bounce opens a crack in the barrier that was the Big Bang.

"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," Bojowald explained, "but we now have Loop Quantum Gravity, a theory that does include the necessary quantum physics." Loop Quantum Gravity was pioneered and is being developed in the Penn State Institute for Gravitational Physics and Geometry, and is now a leading approach to the goal of unifying general relativity with quantum physics. Scientists using this theory to trace our universe backward in time have found that its beginning point had a minimum volume that is not zero and a maximum energy that is not infinite. As a result of these limits, 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.

Quantum-gravity theory indicates that the fabric of space-time has an "atomic" geometry that is woven with one-dimensional quantum threads. This fabric tears violently under the extreme conditions dominated by quantum physics near the Big Bounce, causing gravity to become strongly repulsive so that, instead of vanishing into infinity as predicted by Einstein’s Theory of General Relativity, the universe rebounded in the Big Bounce that gave birth to our expanding universe. The theory reveals a contracting universe before the Big Bounce, with space-time geometry that otherwise was similar to that of our universe today.

Bojowald found he had to create a new mathematical model to use with the theory of Loop Quantum Gravity in order to explore the universe before the Big Bounce with more precision. "A more precise model was needed within Loop Quantum Gravity than the existing numerical methods, which require successive approximations of the solutions and yield results that are not as general and complete as one would like," Bojowald explained. He developed a mathematical model that produces precise analytical solutions by solving of a set of mathematical equations.

In addition to being more precise, Bojowald’s new model also is much shorter. He reformulated the quantum-gravity models using a different mathematical description, which he says made it possible to solve the equations explicitly and also turned out to be a strong simplification. "The earlier numerical model looked much more complicated, but its solutions looked very clean, which was a clue that such a mathematical simplification might exist," he said. Bojowald reformulated quantum gravity’s differential equations — which require many calculations of numerous consecutive small changes in time — into an integrable system — in which a cumulative length of time can be specified for adding up all the small incremental changes.

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Desh Kapoor

The panache of a writer is proven by the creative pen he uses to transform the most mundane topic into a thrilling story. Desh - the author, critic and analyst uses the power of his pen to create thought-provoking pieces from ordinary topics of discussion. He writes on myriad interesting themes. Read the articles to know more about his views and "drishtikone".

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