By: Pedro Ferreira
From: CFTC and ISEL
At: Complexo Interdisciplinar, Anfiteatro
The 2008 Nobel Prize for Physics was given to Y. Nambu, for the introduction, in particle physics, of the concept of spontaneous symmetry breaking, and to M. Kobayashi e K. Maskawa, for having explained the violation of the CP symmetry through and explicit breaking of a symmetry. In this seminar, at a level accessible to a general audience, we will explain what is a symmetry, what is the importance of symmetries in physics and why is it necessary to break them. We will explain the difference between spontaneous and explicit breaking of a symmetry, and the different particle physics problems that they help solve.