Tomohiro Fujita, "What can we learn from primordial gravitational waves?"

Thursday, 15 November 2018 from to (Europe/Amsterdam)
at Nikhef ( H331 )
Having many on-going and upcoming experiments to detect them, we hope primordial gravitational waves (PGW) will be observed in the near future. PGWs produced during inflation are the unique probe for very high energy physics beyond the reach of particle accelerators, and now is a good time to study what we can learn from them. In this seminar, I will discuss that much more information than the energy scale of inflation can be extracted from PGWs by using a model as an example. In the model, SU(2) gauge fields coupled to axion generate detectable PGWs in which the axion potential form is imprinted.