Cosmological implications of Higgs field fluctuations during inflation
  Cosmological implications of Higgs field fluctuations during inflation are
considered. This study is based on the Standard Model and the standard
quadratic model of chaotic inflation where the Higgs field is minimally coupled
to gravity and has no direct coupling to the inflaton. In the Standard model
the renormalisation group improved effective potential develops an instability
(an additional minimum and maximum) at large field values. It is shown that
such a new maximum should take place at an energy scale above $10^{14}
\;\text{GeV},$ otherwise a universe like ours is extremely unlikely. The
extension to the case of the Higgs field interacting with the inflaton field is
discussed.
