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SUMMARY:Two simple modified-gravity models: K-mouflage and Goldstone (ultr
 a-local) models. - Patrick Valageas (Saclay)
DTSTART:20171113T130000Z
DTEND:20171113T140000Z
UID:TALK77351@talks.cam.ac.uk
CONTACT:Tobias Baldauf
DESCRIPTION:The accelerated expansion of the Universe might be related to 
 modifications of gravity on cosmological scales and to the impact of addit
 ional scalar fields. However\, to recover General Relativity on small scal
 es\, one usually needs to introduce non-linear screening mechanisms.\nI wi
 ll present K-mouflage models\, which are one of the three screening mechan
 isms that have been developed so far. I will discuss their stability with 
 respect to quantum corrections\, the constraints from solar system tests o
 f gravity\, and the impact on cosmological probes. I will also briefly dis
 cuss the opposite case of ultra-local models.
LOCATION:CMS\, Pav. B\, CTC Common Room (B1.19) [Potter Room]
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