KEK素粒子原子核研究所理論セミナー(Prof. Hiroshi Suzuki )

  • 分類 理論セミナー
  • 開始 2016/11/22(火)11:00
  • 終了 2016/11/22(火)12:00
  • 会場 研究本館1階会議室1
  • 講演タイトル Fermion number anomaly with the fluffy mirror fermion
  • 講演者 鈴木 博 教授
  • 言語 英語/English
  • 連絡先
  • ウェブサイト
  • 食堂・売店 利用予定なし/0


Recently, Grabowska and Kaplan presented a 4-dimensional lattice formulation of chiral gauge theories on the basis of the so-called chiral overlap operator. We study this formulation from the perspective of the fermion number anomaly and possible associated phenomenology. A simple argument shows that the consistency of the formulation implies that the fermion with the opposite chirality to the physical one, the "fluffy mirror fermion'" or `"fluff", suffers from the fermion number anomaly in the same magnitude (with the opposite sign) as the physical fermion. This immediately shows that if at least one of the fluff quarks is massless, the formulation provides a simple solution to the strong CP problem. Also, if the fluff interacts with gravity essentially in the same way as the physical fermion, the formulation can realize the asymmetric dark matter scenario.