Sgoldstino inflation
  We discuss the possibility that inflation is driven by the sgoldstino, the
superpartner of the goldstino. Unlike in generic supergravity scenarios, the
sgoldstino decouples from all other fields in the theory, which allows for a
simple and robust inflationary model. We argue that the two-field model given
by this single complex scalar correctly captures the full multifield
inflationary phenomenology. On the other hand, the assumption of stability,
along the entire inflationary trajectory, of the supersymmetry-preserving
sector that is integrated out leads to supplementary constraints on the parent
supergravity. We investigate small field, large field and hybrid sgoldstino
inflation scenarios and provide some working examples. They are subject to the
usual fine-tuning issues that are common to all supergravity models of
inflation. We comment on some other recently proposed sgoldstino inflation
models.
