Delta Gravity, Dark Energy and the accelerated expansion of the Universe

September 1, 2015
3:00pm to 4:00pm

IFT Seminar Room/Red Room

Specialist level
Jorge Alfaro
Pontificia U., Santiago de Chile

IFT Seminar Room/Red Room


We present a model of the gravitational field based on two symmetric tensors. The equations of motion of test particles are derived: Massive particles do not follow a geodesic but massless particles trajectories are null geodesics of an effective metric. Outside matter, the predictions of the model coincide exactly with General Relativity, so all classical tests are satisfied. In Cosmology, we get accelerated expansion without a cosmological constant.