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SUMMARY:N-body Degravitation - Mark Wyman (Perimeter Institute)
DTSTART:20081031T130000Z
DTEND:20081031T140000Z
UID:TALK14941@talks.cam.ac.uk
CONTACT:Dr H K Kunduri
DESCRIPTION:A possible resolution to the cosmological constant problem may
 \ncome from the graviton having a small mass. In this picture\,\nthe gravi
 ton carries extra polarizarions. Its helicity-0 or scalar mode is\nsuppres
 sed in regions of high density but becomes important on\ncosmological dist
 ance scales. We are solving the equations approximating the\nscalar compon
 ent numerically as a part of an N-body simulation. This allows\nus to quan
 tify the impact of massive/resonance gravity on the\nformation of large sc
 ale structure for the first time. Some recent\nobservations\,\nmost notabl
 y of bulk peculiar velocity flows\, provide hints that the unique\nphenome
 nology of this framework provides a better approximation to the\ndata than
  standard Lambda-CDM.
LOCATION:Pavilion B Potter Room (B1.19)
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