Fenomenologia de férmions em funções de paredes de domínios.

Abstract

Our observable universe is said to be (3+1)-dimensional. However, it’s believed that certain properties observed in nature may be the result of extra dimensions, almost as an “invisible inheritance”. Among such properties are the flavors numbers and mass hierarchies of the fundamental fermions (quarks and leptons). With this in mind, studying the relation that our universe could have with those extra dimensions may be a way of better understanding the natural properties that surround us. This idea lead us to the Theory of Super Strings, which, among other things, proposes the existence of a (9+1)- dimensional universe, where we would be inserted. Knowing this, we propose here a phenomenological analysis of the fermions in junctions of domains walls. Where these junctions are mechanisms that make up a dimensional reduction method, which allows us to obtain our observable (3+1)-dimensional universe from a (9+1)-dimensional universe, while we looking for degrees of freedom, energies, and decays involving fermions living in these domain walls.