Cosmology Beyond Einstein

Adam Solomon is a theoretical cosmologist interested in how we can unveil the fundamental laws of physics by looking to the sky. While his research has spanned a variety of cosmological observations and fundamental theories, he has focused especially on the mystery of the accelerating expansion of the Universe, and whether this may be a sign of new gravitational physics beyond Einstein's general relativity. He is currently a postdoctoral fellow at the Center for Particle Cosmology at the University of Pennsylvania, having obtained his bachelors at Yale University and his doctorate at the University of Cambridge.

Introduction.- Gravity Beyond General Relativity.- Cosmological Stability of Massive Bigravity.- Linear Structure Growth in Massive Bigravity.- The Geometry of Doubly-Coupled Bigravity.- Cosmological Implications of Doubly-Coupled Massive Bigravity.- Cosmological Implications of Doubly-Coupled Massive Gravity.- Lorentz Violation During In ation.- Discussion and Conclusions.