• 分類 理論セミナー
  • 開始 2015/07/08(水)11:00
  • 終了 2015/07/08(水)12:00
  • 会場 4号館3階輪講室1(345)
  • 講演タイトル  Higgs inflation in a singlet extension of the standard model
  • 講演者 石田 裕之 氏 (島根大学)
  • 言語 英語/English
  • 連絡先 山本恵/
  • ウェブサイト
  • 食堂・売店 利用予定なし/0


Inflation is the most plausible mechanism to resolve several
cosmological problems in the early universe. Higgs inflation
is clearly the most economical possibility. The original
Higgs inflation, however, requires quite a huge coupling
between the Higgs field and the gravity, named the
non-minimal coupling. We propose a model with a right-handed
neutrino and a Z_2 odd real scalar field, which can account
for tiny neutrino masses and the dark matter. We show that
our model gives the non-minimal coupling of around 10,
consistent with the recent Planck observation. Furthermore,
we show that the masses of the right-handed neutrino and
the dark matter are not seriously constrained by the
observed value of the tensor-to-scalar ratio.