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VERSION:2.0
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SUMMARY:Dynamics of cosmological relaxion after reheating
DTSTART:20161219T140000
DTEND:20161219T150000
DTSTAMP:20260503T131643Z
UID:d02f4f8141dc19bd9e0df7acaf7690bb584ebbcb5f4862a3161cd382
CATEGORIES:Conferences - Seminars
DESCRIPTION:Hyungjin Kim\nWe examine if the cosmological relaxation mecha
 nism\, which was proposed recently as a new solution to the hierarchy prob
 lem\, can be compatible with high reheating temperature well above the wea
 k scale. As the barrier potential disappears at high temperature\, the rel
 axion rolls down further after the reheating\, which may ruin the successf
 ul implementation of the relaxation mechanism. It is noted that if the rel
 axion is coupled to a dark gauge boson\, the new frictional force arising 
 from dark gauge boson production can efficiently slow down the relaxion mo
 tion\, which allows the relaxion to be stabilized after the electroweak ph
 ase transition for a wide range of model parameters\, while satisfying the
  known observational constraints. 
LOCATION:BSP 727 (Cubotron)
STATUS:CONFIRMED
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