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SUMMARY:Fifth forces in and around galaxies - Clare Burrage (Nottingham)
DTSTART:20240304T130000Z
DTEND:20240304T140000Z
UID:TALK206785@talks.cam.ac.uk
CONTACT:Dr  Dong-Gang Wang
DESCRIPTION:Light scalar fields are often considered as part of explanatio
 ns for dark energy and dark matter. They also appear in theories in which 
 gravity is modified on cosmological scales. If the scalar field theory has
  a screening mechanism\, the fifth forces that the scalar mediates can be 
 significant in the cosmological vacuum but suppressed on Earth and in the 
 solar system. It has been claimed that current data from galaxy surveys is
  sufficient to exclude the possibility that these theories could be releva
 nt on astrophysical or cosmological scales.  In this talk I will consider 
 how such scalar fields behave in galaxies\, and show that they may not be 
 excluded after all.
LOCATION:CMS\, Pav. B\, CTC Common Room (B1.19) [Potter Room]
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