Primordial SU(2) gauge fields and axions can contribute to the physics of inflation. In this class of models, both the gauge field and axion acquire a VEV, which is P...

The elliptic genus is a powerful deformation invariant of 1+1D SQFTs: if it is nonzero, then it protects the SQFT from admitting a deformation to one with spontaneous supersymmetry breaking...

Our ability to model cosmological observations has reached an awesome level, a tour de force of observational innovation, sophisticated statistical inference, and delicate numerical computation. There’s little doubt that the...

Recent observations of gravitational waves represent a remarkable success of our theoretical models of relativistic binaries. However, accurate models are largely restricted to binaries in which the two members have...

The search for quantum gravity: where are we, where do we go from here?

Founder and conductor Rinaldo Alessandrini’s early music ensemble, Concerto Italiano, came into existence in 1984. Its birth coincides with that of the revival of early music in Italy and is...

In this talk, I will outline the forward model approach to reconstruct cosmological fields in a Bayesian framework. I will focus on two examples - galaxy clustering and neutral hydrogen...

I will consider simple scalar gauge theories with one scalar field in a low-dimensional representation of a gauge group. The renormalizable action often has accidental symmetries that lead to one...