Particles, Astrophysics, and Nuclear Physics Seminar
Center for Cosmology and Particle Physics, Department of Physics, NYU
Quantum Gravity without Relativity
I will review the recent proposal to make general relativity renormalizable in 4D at the expense of breaking Lorentz invariance. After introducing the original idea by P. Horava through a toy model, I will present the realization for the gravitational field where an extra degree of freedom with respect to general relativity will appear. I will show that viable theories can be constructed and discuss some of the phenomenological implications of the proposal.