- #1
robertjford80
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This comes from Paul Davies' the Cosmic Jackpot:
I just assumed a quantum fluctuation was more or less what a fluctuation in normal English is like: something that goes up and down. So I thought a quantum fluctuation was the act of some magical pure energy going up and down. But from the above text it looks like it refers the tendency of particles to pop in and out of existence.
Any further details would be appreciated.
we found that in de Sitter space there was no such particle production, a curious result that can be traced back to the exponential nature of the expansion and the underlying symmetries of spacetime that this implies. But that is not to say that the expansion of space in de Sitter’s model has no quantum effect at all. It does. In particular, the vacuum state of de Sitter space was still subject to quantum fluctuations, which may loosely be regarded as particles being created but then rapidly destroyed again
I just assumed a quantum fluctuation was more or less what a fluctuation in normal English is like: something that goes up and down. So I thought a quantum fluctuation was the act of some magical pure energy going up and down. But from the above text it looks like it refers the tendency of particles to pop in and out of existence.
Any further details would be appreciated.