https://doi.org/10.1140/epjc/s10052-019-7225-2
Regular Article - Theoretical Physics
Generalized dilaton–axion models of inflation, de Sitter vacua and spontaneous SUSY breaking in supergravity
1
Department of Physics, Faculty of Science, Chulalongkorn University, Thanon Phayathai, Pathumwan, Bangkok, 10330, Thailand
2
Institute for Experimental and Theoretical Physics, Al-Farabi Kazakh National University, 71 Al-Farabi Avenue, 050040, Almaty, Kazakhstan
3
Department of Physics, Tokyo Metropolitan University, Minami-ohsawa 1-1, Hachioji, Tokyo, 192-0397, Japan
4
Research School for High Energy Physics, Tomsk Polytechnic University, 30 Lenin Avenue, Tomsk, 634050, Russian Federation
5
Kavli Institute for the Physics and Mathematics of the Universe (IPMU), The University of Tokyo, Chiba, 277-8568, Japan
* e-mail: auttakit.c@chula.ac.th
Received:
5
August
2019
Accepted:
13
August
2019
Published online:
24
August
2019
We propose the unified models of cosmological inflation, spontaneous SUSY breaking, and the dark energy (de Sitter vacuum) in supergravity with the dilaton–axion chiral superfield T in the presence of an
vector multiplet with the alternative Fayet–Iliopoulos term. By using the Kähler potential as
and the superpotential as a sum of a constant and a linear term, we find that viable inflation is possible for
where
. Observations of the amplitude of primordial scalar perturbations fix the SUSY breaking scale in our models as high as
. In the case of
the axion gets the tree-level (non-tachyonic) mass comparable to the inflaton mass.
© The Author(s), 2019