Physics

I will discuss various aspects of non-relativistic field theories on a curved, background spacetime. First things first, we need to know what sort of geometry these theories couple to, as well as the symmetries we ought to impose. I will argue that...

This talk is based on my recent publication on Physical Review Letters in July 2014. http://journals.aps.org/prl/abstract/10.1103/PhysRevLett.113.051801

I revisit some alternative mechanisms of gravitational wave production during Inflation and argue that they inevitably produce a large amount of scalar fluctuations. For an appreciable tensor contribution the associated scalar fluctuations...