On sgoldstino-less supergravity models of inflation

Dall'Agata, Gianguido; Zwirner, Fabio

doi:10.1007/JHEP12(2014)172

On sgoldstino-less supergravity models of inflation

Gianguido Dall'Agata
(
- Padua U. and
- INFN, Padua
)
,
Fabio Zwirner
(
- Padua U. and
- INFN, Padua and
- CERN
)

Nov 10, 2014

19 pages

Published in:

JHEP 12 (2014) 172

Published: Dec 30, 2014

e-Print:

1411.2605 [hep-th]

DOI:

10.1007/JHEP12(2014)172

Report number:

CERN-PH-TH-2014-199,
DFPD-2014-TH-16

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Abstract: (Springer)

We go a step further in the search for a consistent and realistic supergravity model of large-field inflation by building a class of models with the following features: during slow-roll, all the scalar fields other than the inflaton are frozen by large inflatondependent masses or removed from the spectrum, at the end of inflation, supersymmetry is spontaneously broken with naturally vanishing classical vacuum energy. We achieve this by combining some geometrical properties of the Kähler potential with the consistent use of a single nilpotent chiral superfield, in one-to-one correspondence with the supersymmetrybreaking direction in field space at the vacuum.

Note:

19 pages. v2: references added and few minor changes to the text. v3: published version

Supersymmetry Breaking
Supergravity Models
Cosmology of Theories beyond the SM
inflation: model
supersymmetry: spontaneous symmetry breaking
potential: Kaehler
superfield: chiral
supersymmetry: symmetry breaking
field theory: scalar
vacuum state: energy

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