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SUMMARY:Coset Constructions and Modified Gravity - Garrett Goon (DAMTP)
DTSTART:20150220T130000Z
DTEND:20150220T140000Z
UID:TALK57451@talks.cam.ac.uk
CONTACT:Benson Way
DESCRIPTION:Historically\, it was notoriously difficult to construct a the
 ory of massive gravity (mGR) and only in the last decade or so have some o
 f its subtle facets become well understood.  Many of the peculiarities\, p
 roblems and features of mGR stem from the longitudinal mode which utilizes
  higher derivative "galileon" interactions. Galileons have many interestin
 g properties and I will start by discussing their interpretation as Goldst
 one modes arising from the spontaneous breaking of spacetime symmetries an
 d their appearance as Wess-Zumino terms in the coset construction\, the fa
 miliar tool for constructing EFTs for systems displaying spontaneously bro
 ken symmetries.  Following this\, I will use the same coset construction t
 ools to build the full\, ghost free dRGT theory of mGR.
LOCATION:Pavilion B Potter Room (B1.19)
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