Seminario con el prof. Jorge Zanelli – Unconventional Supersymmetry – 8 de noviembre de 2013 – 10:00:00 AM
EL PROGRAMA DE POSGRADO EN FÍSICA invita a todos para lo seminario:
Unconventional Supersymmetry
Prof. Jorge Zanelli
Centro de Estudios Científicos (CECS), Valdivia – Chile
Resumen:
A gauge theory for a superalgebra is constructed. The local symmetry includes an internal gauge group, the Lorentz group and supersymmetry generators. The important distinctive features between this theory and standard supersymmetries and supergravities are:
i) The number of fermionic and bosonic states are not necessarily equal.
ii) No additional superpartners appear, «bosoninos» or s-leptons are absent.
iii) Although this supersymmetry includes gravity, there is no gravitino.
iv) Fermions acquire mass from their coupling to the background or from self-couplings. Bosons remain massless.
In odd dimensions, the Chern-Simons form provides an action invariant under the entire gauge. In even dimensions, the Yang-Mills form is the only natural option and the symmetry breaks down to (Internal Gauge Group) (Lorentz Group)
Following the Townsend-MacDowell-Mansouri construction starting with a osp(4|2) connection, a Lagrangian invariant under the subalgebra u(1) x so(3,1) is obtained, and the only non-standard additional piece is the Nambu-Jona-Lasinio term.
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