Title: Symmetries and quantum fluctuations in the
Universe
Date/Time: Tuesday, 27 April, 2021 / 5:00 p.m
Speaker: Prof. Sunghoon Jung (Seoul National
University)
Abstract: Symmetries have played
central roles in understanding the deeper nature of the Universe. The Higgs
boson and the gravitational wave (GW) are no exceptions. Symmetries are,
however, particularly mysterious or powerful for them. First of all, it has
been believed that some undiscovered symmetry will explain the Higgs mass, but
none of them were discovered. Rather, recent works show that such symmetry
effect may emerge out of quantum fluctuations in the earliest Universe during
inflation. Secondly, symmetries, albeit broken, also dictate how GWs preserve
the information of dark matter out of path integral. With these examples of latest
researches, I will talk about how particle physicists are exploring the
Universe beyond the horizon.