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SUMMARY:Higgs xi-inflation for the 125--126 GeV Higgs - Kyle Allison (Oxfo
 rd)
DTSTART:20131129T160000Z
DTEND:20131129T170000Z
UID:TALK48375@talks.cam.ac.uk
CONTACT:Damien George
DESCRIPTION:A non-minimal coupling xi of the Higgs field to gravity can gi
 ve rise to inflation within the Standard Model\, but a simple tree-level a
 nalysis indicates that a large value of xi is required.  This may cause a\
 nproblem for the model due to a breakdown of perturbative unitarity below 
 the inflationary scale.  In this talk I will investigate how a Higgs mass 
 in the 125--126 GeV range can significantly reduce the value\nof xi requir
 ed for inflation through the running of the Higgs self-coupling to small v
 alues near the Planck scale.  A new region of inflation with distinct pred
 ictions\, including an observable level of the\ntensor-to-scalar ratio\, i
 s also discussed.
LOCATION:MR4\, CMS\, Wilberforce Road\, Cambridge\, CB3 0WB
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