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SUMMARY:Cosmology without averaging - Timothy Clifton (Oxford)
DTSTART:20111114T130000Z
DTEND:20111114T140000Z
UID:TALK32596@talks.cam.ac.uk
CONTACT:Camille Bonvin
DESCRIPTION:Averaging is a concept that is routinely used in cosmology\, b
 ut is very difficult to formulate within general relativity. In this talk 
 I will discuss some of these difficulties\, and why they are problematic f
 or cosmology. I will then move on to discuss models of the Universe that d
 o not require any averaging. These models allow us to study the emergence 
 of homogeneous and isotropic cosmologies without assuming the existence of
  such spaces to begin with. They therefore also allow insights into the av
 eraging problem\, and the back-reaction of structures on the large-scale e
 volution of the Universe in cosmology. 
LOCATION:CMS\, Pav.B\, CTC Common Room (B1.19)
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