Abstract
We discuss resonant gravitino production in the early Universe in the presence of SUSY flat directions whose large expectation values break some but not all gauge symmetries. We find that for a large region of parameter space the gravitino abundance is several orders of magnitude larger than the cosmological upper bound. Since flat directions with large expectation values are generically expected in supersymmetric theories this result further exacerbates the gravitino problem. [Based on Phys. Rev. D 90, 023522 (2014) by N. Mahajan, R. Rangarajan and A. Sarkar]
Published Version
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