상단메뉴
글로벌메뉴
좌측메뉴
검색
| FIELD | Phys:Particle Physics |
|---|---|
| DATE | December 14 (Tue), 2021 |
| TIME | 16:00-17:30 |
| PLACE | Online |
| SPEAKER | Natsumi Nagata |
| HOST | Park, Jae-hyeon |
| INSTITUTE | University of Tokyo |
| TITLE | Axion Quality Problem Alleviated by Non-Minimal Coupling to Gravity |
| ABSTRACT | It is known that gravitational instantons, or Euclidean wormholes, induce the Peccei-Quinn symmetry breaking effects, spoiling the Peccei-Quinn solution to the strong CP problem. In this talk, I will first review this argument based on some old studies. I will then discuss that this U(1)-breaking effect can sufficiently be suppressed if the Peccei-Quinn field has a non-minimal coupling to gravity. The required size of the non-minimal coupling can be compatible with that needed for successful inflation, where the Peccei-Quinn scalar field plays the role of inflaton. https://indico.kias.re.kr/event/77 |
| FILE |
