Ponente
Descripción
The Standard Model of particles physics (SM), which describes the strong, weak and electromagnetic interactions, has shown to be very successful. However, there are clear indications that the SM is not the ultimate theory of elementary particle interactions since it has troubles to explain some phenomena such as the neutrino masses. It is known that some of these problems could be resolved considering a gauge theory with invariance under a larger group than the SM gauge group. Thereby the Standard Model would be the low-energy limit of this new gauge theory. We call them Grand Uni ed theories (GUTs). Most of GUTs have important implications in Cosmology, for example an explication for the baryon asymmetry of the universe, new dark matter candidates, an approach to the earliest universe energies... We will introduce Grand Uni cation and we will discuss its role in Cosmology. Furthermore, we shall present an uni fied model based on gauge group SU(4)_CxSU(4)_RL.
