"Dynamical Breaking of Supergravity via gravitino condensation and inflation"
Prof. Nick E. Mavromatos, King's College London
In a theory where a global breaking of supersymmetry (F-type) occurs at a
scale f, I discuss dynamical breaking of local supersymmetry
(supergravity) without invoking other matter fields except condensates of
gravitinos, formed dynamically. The goldstino associated with the global
SUSY breaking is absorbed by the gravitino, the SUSY partner of graviton,
which thus becomes massive via the formation of condensates at the
non-trivial minima of the (one-loop) effective potential. The gravitons
remain exactly massless, and thus local supersymmetry breaks dynamically.
Such processes in the early Universe may lead to inflation, which for
conformal supergravity models fits the Planck data excellently. The inflaton
in this minimal scenario is associated with the massive gravitino condensate
field.