SEMINARIO DE FISICA TEORICA I Y II Titulo: Dark Matter from the UV completion of gravity Conferenciante: Jose Alberto Ruiz Cembranos (University of Minnesota) Dia y hora: 17, 14:30 (Aula 12) Resumen: The modification of Einstein gravity at high energies is mandatory from a quantum approach. In this seminar, we will point out that this modification will necessarily introduce new degrees of freedom. We will analyze the possibility that these new gravitational states can provide the main contribution to the non-baryonic dark matter of the Universe. Unfortunately, the right ultraviolet completion of gravity is still unresolved. For this reason, we will illustrate this idea with the simplest high energy modification of the Einstein-Hilbert action: R^2-gravity.