Faculty of Physics, Hanoi University of Science

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Before the Big Bang - Loop Quantum Cosmology Explained

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"What happened before the big bang? It's one of the most popular questions in astronomy. When the observable universe is smaller than an atom our classical theory of gravity, Einstein's theory of General Relativity, breaks down and needs to be modified with a theory that can also accommodate the physics of the sub atomic world, quantum mechanics. Armed with a quantum theory of gravity cosmologists may be able to tackle the question of what happened before the big bang. Loop quantum cosmology is considered one of the most promising candidates for such a theory. In this film we interview some of the leading scientists in the field to explain this exciting theoretical development. We ask what happened before the big bang? Is there a multiverse? Why was the entropy of the universe so low in the past? Could the Planck spacecraft anomalies be signs of the pre big bang universe? How do we test these ideas? Should we accept the claims that the universe really has a beginning?"---http://www.youtube.com/watch?v=IFcQuEw0oY8

Source: http://www.youtube.com/watch?v=IFcQuEw0oY8

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