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Inflation and Supersymmetry Breaking

Wilfried Buchmuller·Laura Covi·David Delepine
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Abstract

We study the connection between inflation and supersymmetry breaking in the context of an O'Raifeartaigh model which can account for both hybrid inflation and a true vacuum where supersymmetry is spontaneously broken. For a weakly coupled inflaton field, the dynamics during the inflationary phase can be determined by the supersymmetry breaking scale $M_S\sim 10^{10}$ GeV, even if $H_I >> m_{3/2}$. The spectrum of density fluctuations is then almost scale invariant, with a spectral index $n-1={\cal O}(M_G^2/M_P^2)$. The mass parameter $M_G$ of the O'Raifeartaigh model is determined by the COBE normalization for the cosmic microwave background to be the grand unification scale, $M_G \sim 10^{16}$ GeV.

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Wilfried Buchmuller, Laura Covi, David Delepine. 2000-08-25. Inflation and Supersymmetry Breaking. https://doi.org/10.1016/s0370-2693(00)01005-4

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