
I discuss the possibility that inflation is driven by supersymmetry breaking, with the superpartner of the goldstino (sgoldstino) playing the role of the inflaton. Imposing an R-symmetry to satisfy the slow-roll conditions, avoiding the so-called η -problem, leads to an interesting class of small field inflation models, characterised by an inflationary plateau around the maximum of scalar potential near the origin, where R-symmetry is restored with the inflaton rolling down to a minimum, describing the present phase of the Universe. Inflation can be driven by either an F- or a D-term, while the minimum has a positive tuneable vacuum energy. The models agree with cosmological observations and, in the simplest case, predict a rather small tensor-to-scalar ratio of primordial perturbations. This talk is an extended version of an earlier review (Antoniadis, 2018).
scale: inflation, Approximation procedures, weak fields in general relativity and gravitational theory, 530 Physics, slow-roll conditions, supersymmetry breaking, QC793-793.5, sgoldstino, [PHYS] Physics [physics], D-term, vacuum state: energy, Astrophysical cosmology, R-symmetry, Supersymmetric field theories in quantum mechanics, primordial perturbations, inflation, supersymmetry: symmetry breaking, sparticle, Relativistic cosmology, perturbation: primordial, [PHYS.GRQC] Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], potential: scalar, Symmetry breaking in quantum theory, spontaneous symmetry breaking, slow-roll approximation, Elementary particle physics, R symmetry, inflation: model, inflaton, [PHYS.HTHE] Physics [physics]/High Energy Physics - Theory [hep-th], supersymmetry, [PHYS.ASTR] Physics [physics]/Astrophysics [astro-ph]
scale: inflation, Approximation procedures, weak fields in general relativity and gravitational theory, 530 Physics, slow-roll conditions, supersymmetry breaking, QC793-793.5, sgoldstino, [PHYS] Physics [physics], D-term, vacuum state: energy, Astrophysical cosmology, R-symmetry, Supersymmetric field theories in quantum mechanics, primordial perturbations, inflation, supersymmetry: symmetry breaking, sparticle, Relativistic cosmology, perturbation: primordial, [PHYS.GRQC] Physics [physics]/General Relativity and Quantum Cosmology [gr-qc], potential: scalar, Symmetry breaking in quantum theory, spontaneous symmetry breaking, slow-roll approximation, Elementary particle physics, R symmetry, inflation: model, inflaton, [PHYS.HTHE] Physics [physics]/High Energy Physics - Theory [hep-th], supersymmetry, [PHYS.ASTR] Physics [physics]/Astrophysics [astro-ph]
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