2022/11/24(Thu)
14:00 -16:00
五樓第一會議室 5F, 1st Meeting Room
視訊演講 Video Seminar [ Meeting Link / ID: 2513 073 3117 / Password: jwMMVMtT428 ]
Title
Cosmological magnetic fields and chiral effects in the early Universe
Speaker
Prof. Kohei Kamada (Research Center for the Early Universe (RESCEU),University of Tokyo)Abstract
Recent observations of TeV blazars suggest the existence of the intergalactic
magnetic fields. They have increased the interests to use cosmological magnetic
fields as the tool to "see" the primordial Universe. From this point of view,
I have explored possible processes in the early Universe that involve
magnetic fields. In particular, I have pointed out that chiral effects such as
the chiral magnetic effect can play important roles. In this talk,
I will explain that one of the mysteries of the early Universe, the baryon
asymmetry of the Universe, can be explained by the helical hypermagnetic fields
in the early Universe and show possible mechanism to generate them,
such as the axion inflation and the chiral plasma instability.
Their implication on the intergalactic magnetic fields and the gravitational wave back ground will be discussed.
Language
演講語言 (Language): in English