Abstract
We consider inflation and supersymmetry breaking in the context of a minimal model of supersymmetry in which the only "low" energy remnant of supersymmetry is the gravitino with a mass of order an EeV. In this theory, the supersymmetry breaking scale is above the inflaton mass, m≃3×1013 GeV, as are all sfermion and gaugino masses. In particular, for a no-scale formulation of Starobinsky-like inflation using the volume modulus T, we show that inflation can be accommodated even when the supersymmetry breaking scale is very large. Reheating is driven through a gravitational coupling to the two Higgs doublets and is enhanced by the large μ-parameter. This leads to gravitino cold dark matter where the mass is constrained to be in the range 0.1 EeVm3/21000 EeV.
Original language | English (US) |
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Article number | 115032 |
Journal | Physical Review D |
Volume | 96 |
Issue number | 11 |
DOIs | |
State | Published - Dec 28 2017 |
Bibliographical note
Publisher Copyright:© 2017 American Physical Society.