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posted by LaminatorX on Thursday September 03 2015, @06:59PM   Printer-friendly
from the Two-Roads-Diverged-in-a-Yellow-Wood dept.

The existence of parallel universes may seem like something cooked up by science fiction writers, with little relevance to modern theoretical physics. But the idea that we live in a “multiverse” made up of an infinite number of parallel universes has long been considered a scientific possibility – although it is still a matter of vigorous debate among physicists. The race is now on to find a way to test the theory, including searching the sky for signs of collisions with other universes.

It is important to keep in mind that the multiverse view is not actually a theory, it is rather a consequence of our current understanding of theoretical physics. This distinction is crucial. We have not waved our hands and said: “Let there be a multiverse”. Instead the idea that the universe is perhaps one of infinitely many is derived from current theories like quantum mechanics and string theory.

The universes predicted by string theory and inflation live in the same physical space (unlike the many universes of quantum mechanics which live in a mathematical space), they can overlap or collide. Indeed, they inevitably must collide, leaving possible signatures in the cosmic sky which we can try to search for.

Whether we will ever be able to prove their existence is hard to predict. But given the massive implications of such a finding it should definitely be worth the search.

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  • (Score: 2) by Mr Big in the Pants on Thursday September 03 2015, @08:40PM

    by Mr Big in the Pants (4956) on Thursday September 03 2015, @08:40PM (#231956)

    I also love how he refers to it not just being a consequence of "maths" but a consequence of "theoretical physics" and then refers to string theory...

    ...which current almost exclusively resides in the realm of mathematics with little if any experimentation backing it up.

    This is a complete load of hog wash. It reads as if it is a lame PR attempt to bolster bad press or something?!

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  • (Score: 2) by Zz9zZ on Thursday September 03 2015, @09:34PM

    by Zz9zZ (1348) on Thursday September 03 2015, @09:34PM (#231981)

    Yeah, although he referenced quantum mechanics as well. The article is not a waste, just a layman's intro to the multiverse concept with the news that they may be able to experimentally test for it. At worst just driving web traffic, but it was well written.

    ~Tilting at windmills~
  • (Score: 0) by Anonymous Coward on Thursday September 03 2015, @11:32PM

    by Anonymous Coward on Thursday September 03 2015, @11:32PM (#232033)

    Fuck the Journal of Quantum Physics, I get my quantum cosmology information from