Monday, August 08, 2011

No Sign Of "Eternal Universe" Yet

It appears from these latest publications, we do not have any detection yet from CMB of collisions from "bubble universes" (didn't know we were looking for them).

Stephen Feeney at University College London and his colleagues analyze seven years of cosmic microwave background data from the Wilkinson Microwave Anisotropy Probe (WMAP) to hunt for signatures of eternal inflation.

They find no signatures of collisions, but are able to use this null result to put an upper limit on the number of bubble collisions the theory could predict and still be consistent with the data.

Oh well. I'm sure we'll continue to hunt for them!


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