2021-04-22
(木) 宇宙物理学セミナーUTAPwiki/セミナー/宇宙物理学セミナー
Speaker:Kohei Fujikura
Title:
Cosmological phase transitions in physics beyond the Standard Model of particle physics
Abstract:
Since the very early universe is filled with thermal plasma, the thermal effect plays an important role. When the temperature of the universe is sufficiently higher than a certain scale of a symmetry breaking, a broken symmetry is restored. As the temperature decreases due to the cosmic expansion, cosmological phase transitions associated with rearrangement of the ground state take place. If cosmological phase transitions are of the first order, they proceed via nucleations of bubbles. They expand and eventually coalesce with each other until they fill the universe. During this process, stochastic gravitational wave backgrounds are generated by bubble collisions, sound waves and turbulence of thermal plasma. In this seminar, I will mainly discuss the dynamics of cosmological phase transitions as well as the production of stochastic gravitational wave backgrounds realized in theories beyond the Standard Model of particle physics.
2021-04-26
(月) 観測的宇宙論速報
内容：添付ファイル [添付] 参照
Author(s)TitleYear, Journal,Number(,Link)Y. SutoJinsei Ippan ni Sotairon2010, ISBN978-4-13-063354-3
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