(Português) Programa de Pós-Graduação em Física da UFSC, Florianópolis

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. 

Fecha: 8 de noviembre de 2013 – (Viernes) – Lugar: Auditorio del bloque G – Sala 419 – Horário: 10:00:00 AM