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Q-Monopole-Ball: A Topological and Non-Topological Soliton
12/31
2021
Seminar
- Title Q-Monopole-Ball: A Topological and Non-Topological Soliton
- Speaker 卢思达 (Tel-Aviv University)
- Date 2021年12月31日 15:00
- Venue https://us02web.zoom.us/j/84866078428?pwd=WE1iQUJVSXJjSzJ4anU0R3pLYW9IUT09 会议号：848 6607 8428 密码：719098
Abstract
A soliton state with both topological and non-topological charges is shown to exist in a certain spontaneously broken gauge theory with an additional global U(1) symmetry. This new soliton state, the Q-monopole-ball, is shown to be stable from decaying into an isolated Q-ball and a magnetic monopole state. There exists a minimum global charge for a Q-monopole-ball to be stable from decaying into free global U(1)-charged particles and an isolated monopole. Q-monopole-balls with a large magnetic charge are shown to be also stable if the topological charge is smaller than the cubic root of the global charge. Q-monopole-balls could be produced from a phase transition in the early universe and account for all dark matter.