The Standard Model of Particles and Forces in the Framework of 2T-physics

por Itzhak Bars (USC, Los Angeles, CA)

martes 6 jun. 2006 16:30 → 17:30 Europe/Madrid

Sala Seminarios (Dpto. de Física Teórica (UVEG))

It is shown that the Standard Model in 3+1 dimensions is a gauge fixed version of a 2T-physics field theory in 4+2 dimensions, thus establishing that 2T-physics provides a correct description of Nature from the point of view of 4+2 dimensions. The 2T formulation leads to phenomenological consequences of considerable significance. In particular, the higher structure in 4+2 dimensions prevents the problematic F×F* term in QCD. This resolves the strong CP problem without a need for the Peccei-Quinn symmetry or the corresponding elusive axion. Mass generation is less straightforward in the new formulation of the Standard Model. But since this is the obscure part of the Standard Model, and there are new mechanisms in the 2T action, the mass generation deserves further study of what the 2T approach has to offer. The technical progress is based on the construction of a new field theoretic version of 2T-physics including interactions in an action formalism in d+2 dimensions, and invariant under a new type of gauge symmetry. This opens the way for investigations of the Standard Model directly in 4+2 dimensions, or from the point of view of various embeddings of 3+1 dimensions, by using the duality, holography, symmetry and unifying features of 2T-physics.