Abstract
The discovery of a large tensor-to-scalar ratio by the BICEP2 experiment points to large field excursions during inflation. One framework that predicts large r is monodromy inflation. While discussed mainly in the context of string theory, the phenomenon can be illustrated and studied in the well-understood framework of SUSY QCD with a large number of colors. We discuss the requirements for viable inflation as well as various difficulties for model building, including tunneling, tuning, and the species problem.
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Dine, M., Draper, P. & Monteux, A. Monodromy inflation in SUSY QCD. J. High Energ. Phys. 2014, 146 (2014). https://doi.org/10.1007/JHEP07(2014)146
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DOI: https://doi.org/10.1007/JHEP07(2014)146