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Were There an Infinite Number Of Quantum Beginnings? Stephen Hawking Says "Yes"

segunda-feira, 26 de outubro de 2009 ·

Were There an Infinite Number Of Quantum Beginnings? Stephen Hawking Says "Yes"

Space-shape-3 That might sound like what happens when a poet reads a physics textbook, but it’s an actual theory put forward by Stephen Hawking-grade scientists.  Stephen Hawking, in fact, and Professor Thomas Hertog of CERN, who came up with a unique answer to how the universe began: “In every way imaginable.”

That’s not the result of chemically-assisted consciousness, either, they actually derived their way to that solution to solve problems in the existing approach.  Physics is excellent at starting somewhere and working out what happens afterwards - but when the whole question is “how did things start?” you can’t do that.  You could run the physics backwards, which works for footballs and F15s, but only because they really are classical - and when you work backwards from the result you’re assuming everything obeyed classical rules all the way back, because you can’t undo an observation to find the quantum mixture of states that existed previously.

The Hawking/Hertog approach is to instead define a new approach to the problem based on what we know: right now.  They call this the “Top-down” approach, starting with the end result and working backwards in a way which accounts for quantum mechanics - and therefore can’t isolate an individual history.  In fact, even the statement of an individual universe without observers in it doesn’t make sense.

But how can you tell trash from real theory?  Easily: the latter is verifiable, and amazingly the array of un-universes selected against on the way to the way things are now left a tiny imprint.  The scientists describe how some effects of this extraordinary genesis would leave imprints on the observable cosmic microwave background, and are working to make predictions of what would be seen - so they can then see if they see it.

Luke McKinney

Hawking rewrites history backwards http://www.bioedonline.org/news/news.cfm?art=2617


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