TY - JOUR
T1 - Generalized dilaton–axion models of inflation, de Sitter vacua and spontaneous SUSY breaking in supergravity
AU - Aldabergenov, Yermek
AU - Chatrabhuti, Auttakit
AU - Ketov, Sergei V.
PY - 2019/8/1
Y1 - 2019/8/1
N2 - We propose the unified models of cosmological inflation, spontaneous SUSY breaking, and the dark energy (de Sitter vacuum) in N= 1 supergravity with the dilaton–axion chiral superfield T in the presence of an N= 1 vector multiplet with the alternative Fayet–Iliopoulos term. By using the Kähler potential as K= - αlog (T+ T¯) and the superpotential as a sum of a constant and a linear term, we find that viable inflation is possible for 3 ≤ α≤ αmax where αmax≈ 7.235. Observations of the amplitude of primordial scalar perturbations fix the SUSY breaking scale in our models as high as 1013GeV. In the case of α> 3 the axion gets the tree-level (non-tachyonic) mass comparable to the inflaton mass.
AB - We propose the unified models of cosmological inflation, spontaneous SUSY breaking, and the dark energy (de Sitter vacuum) in N= 1 supergravity with the dilaton–axion chiral superfield T in the presence of an N= 1 vector multiplet with the alternative Fayet–Iliopoulos term. By using the Kähler potential as K= - αlog (T+ T¯) and the superpotential as a sum of a constant and a linear term, we find that viable inflation is possible for 3 ≤ α≤ αmax where αmax≈ 7.235. Observations of the amplitude of primordial scalar perturbations fix the SUSY breaking scale in our models as high as 1013GeV. In the case of α> 3 the axion gets the tree-level (non-tachyonic) mass comparable to the inflaton mass.
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U2 - 10.1140/epjc/s10052-019-7225-2
DO - 10.1140/epjc/s10052-019-7225-2
M3 - Article
AN - SCOPUS:85071337789
VL - 79
JO - European Physical Journal C
JF - European Physical Journal C
SN - 1434-6044
IS - 8
M1 - 713
ER -