Gravitational waves from the first order phase transition of the Higgs
  field at high energy scales
  In a wide class of new physics models, there exist scalar fields that obtain
vacuum expectation values of high energy scales. We study the possibility that
the standard model Higgs field has experienced first order phase transition at
the high energy scale due to the couplings with these scalar fields. We
estimate the amount of gravitational waves produced by the phase transition,
and discuss observational consequences.
