Online Seminar “Connecting Cosmic Inflation to Particle Physics with LiteBIRD, CMB S4, EUCLID and SKA”

Star-UBB Seminar Series:- Connecting Cosmic Inflation to Particle Physics with the Lite satellite for the study of B-mode polarization and Inflation from cosmic background Radiation Detection(LiteBIRD), Cosmic Microwave Background(CMB) S4, EUCLID and Square Kilometre Array(SKA)

The speaker shows that next generation CMB experiments will be capable of the first ever measurement of the inflaton coupling to other particles, opening a new window to probe the connection between cosmic inflation and particle physics. For their analysis they introduce a simple analytic method to estimate the sensitivity of future CMB observations to the reheating temperature and the inflaton coupling. This sensitivity is based on the impact that the reheating phase after cosmic inflation has on the redshifting of cosmic perturbations. Applying their method to LiteBIRD and CMB-S4 they find that, within a given model of inflation, these missions have the potential to impose both an upper and a lower bound on the inflaton coupling. Further improvement can be achieved if CMB data is combined with optical and 21cm surveys. Their results demonstrate the potential of future observations to constrain microphysical parameters that can provide an important clue to understand how a given model of inflation may be embedded in a more fundamental theory of nature.

時間:2023.11.09(四) 16:00~17:00
頻道:Zoom ID:853-7454-4159 ←
講者:Dr. MING Lei 明磊 博士 (中国广州 中山大学物理学院)


Scientific and Technological Advanced Research- Babeș-Bolyai University(Star-UBB) Seminar Series in Gravitation, Cosmology and Astrophysics

Presently a period of rapid and intense change are being witnessed in our understanding of the gravitational force, at a rate that is quickly increasing since the important observational discoveries of the late 1990s. With the advent of new observational techniques, the emergence of important cosmological and astrophysical paradigms can be seen that lead to a deep change in our understanding of the Universe. Astronomical observations strongly suggest that at large scales the force of gravity may not behave according to standard general relativity, and that a generalization of the gravitational action, either at the geometric level, or at the matter level, may be required for a full understanding of the gravitational interaction.

The goal of the present seminar is to bring Theoretical Gravitational Physics closer to the observations and experiments, and to discuss current topics in general relativity, high-energy physics, astrophysics and cosmology.


Verified by MonsterInsights