报告人简介：
Professor Yamaguchi is the director of the Center for Theoretical Physics of the Universe, Cosmology, Gravity and Astroparticle Physics group, established in March 2023. Professor Yamaguchi received his B.S., M.S. and Ph.D. from the University of Tokyo. In 1999 he did post-doc work at RESCEU in the University of Tokyo followed by working at Brown University in 2003. He has worked as an associate professor at Aoyama Gakuin University from 2004 to 2010 followed by working at Tokyo Institute of Technology in 2010, and in 2023 took on his role as a director at IBS. He is also the Professor Emeritus at Tokyo Institute of Technology.

讲座摘要：
The Higgs boson was discovered in the LHC experiment, but given the current lack of physics beyond the Standard Model of particle physics, such as supersymmetry, the importance of the universe as a means of exploring more fundamental laws of physics at high energies is expected to increase. In more fundamental theories beyond the Standard Model, it is believed that many new particles exist in addition to those of the Standard Model, but their mass scales are, of course, unknown. Although particles on the order of a few TeV may be found in the near future using ground-based accelerators, it will be almost impossible to directly produce particles with masses far beyond the TeV scale using ground-based accelerators even in the future. Therefore, the only way to elucidate the nature of such new particles is to look for their traces in the universe. In this talk, we will explain how to extract information about physics beyond the Standard Model through the properties of primordial density perturbations produced during inflation.

邀请人：Alexey S. Koshelev