Could the Big bang have been a superposition of many different states, until we started measuring it and observing it (much like Schrodinger's cat) thus forcing it into one state? I heard this in a physics lecture and I'm curious.
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Makes sense, Wigner proposed that consciousness caused collapse of the wave function. Before life begins on earth. according to him the universe is in a state of superposition. After life reaches a certain theshold. It finally collapsed the wave function of the earth and the surroundings.
this is too complex
Wave functions of the universe such as the Hartle Hawking and Tunnerling wave functions have a function for both the "underbarrier" and "classical" regions.
In Hartle Hawking context, all universes in the normalized probability distribution coexist and there is an infinite number of parallel universes. I think the idea that the wave function collapsed after a measurement was done on it is rooted in Copenhagen interpretation.
This information is speculative, however, and there are many interpretations.
your question does make sense since superpositions of states have been observed on small scales, quantum gravity must allow such superpositions as well.
Based on what I've read from Hertog and hawking, within just a few seconds after the Big Bang, a single history had already come to dominate the Universe,
But in the first instants of the Big Bang, there existed a superposition of ever more different versions of the Universe, instead of a unique history. And most crucially, Hertog says that "our current Universe has features frozen in from this early quantum mixture".
I think they are proposing it as a possible hypothesis. If that hypothesis is true, then the wavefunction that was the superposition of all possible universes collapsed pretty soon after the Big Bang.
http://www.dailygalaxy.com/my_weblog/200…
this is too complex
Wave functions of the universe such as the Hartle Hawking and Tunnerling wave functions have a function for both the "underbarrier" and "classical" regions.
In Hartle Hawking context, all universes in the normalized probability distribution coexist and there is an infinite number of parallel universes. I think the idea that the wave function collapsed after a measurement was done on it is rooted in Copenhagen interpretation.
This information is speculative, however, and there are many interpretations.
your question does make sense since superpositions of states have been observed on small scales, quantum gravity must allow such superpositions as well.
Based on what I've read from Hertog and hawking, within just a few seconds after the Big Bang, a single history had already come to dominate the Universe,
But in the first instants of the Big Bang, there existed a superposition of ever more different versions of the Universe, instead of a unique history. And most crucially, Hertog says that "our current Universe has features frozen in from this early quantum mixture".
I think they are proposing it as a possible hypothesis. If that hypothesis is true, then the wavefunction that was the superposition of all possible universes collapsed pretty soon after the Big Bang.
http://www.dailygalaxy.com/my_weblog/200…
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