Large scale B-mode patterns in CMB polarization, if detected, would constitute a “smoking gun” signature of primordial gravitational waves generated during an inflationary phase in the early universe. In this talk, I will discuss other sources of B-modes, such as primordial magnetic fields, axion-like fields and cosmic strings, and prospects of isolating their distinguishing features with future CMB measurements.
About the speaker
Levon Pogosian is a cosmologist, who considers the universe as a laboratory for testing the laws of Nature. His interests include dark energy and modified gravity, cosmic microwave background (CMB), structure formation, cosmic magnetic fields, cosmic strings and other topological defects and their implications for particle physics and cosmology.
More details on Levon's research can be found here.