Did Quantum Realm Existed Before Big Bang ? If Not Then How ? If Yes Then How ?
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Answer:
If the quantum fields that we know of today emerged from some earlier state where they didn't exist previously, that state must be confined to a realm before the hot Big Bang. ... The quantum fluctuations that occur during inflation do indeed get stretched across the Universe.
As fate would have it, a thing such as the quantum realm technically exists in real life. ... Scientifically speaking, a quantum realm is a place where the laws of quantum mechanics are valid. Dr. Tewari explains that this idea has since branched into theories about the existence of a multiverse.
Answer:
Regardless, much work is being done into this area of research. The primary consequence to come from LQG is that it predicts that the Big Bang which occurred 13.7 billion years ago was actually a “Big Bounce”; our universe is therefore the product of a contracting universe before the Big Bang. The previous universe (or our universe “twin”) contracted to a single point (which could be interpreted as a “Big Crunch”) and then rebounded in a Big Bounce to produce the Big Bang as we’ve learned to accept as the birth of the universe as we know it. But until now, although the pre-bounce universe has been predicted, its characteristics could not be known. No information about the pre-bounce universe could be observed in today’s universe, the Big Bounce causes a “cosmic amnesia”, destroying all information of the previous universe.Analysing what happened before the Big Bang is only part of the story. By making this approximation of a key LQG equation, Singh and Corichi are working on models where galaxies and other physical structures leave an imprint in the pre-bounce universe to influence the post-bounce universe. Would these structures be distributed in similar ways? Will the structures in one universe be similar or identical to structures in the other universe? There may also be an opportunity to look into the future of this universe and predict whether the conditions are right for another Big Bounce (once can imagine repeated bounces, producing a cycle of universes).
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