BICEP/ Keck constraints on attractor models of inflation and reheating

Recent BICEP/Keck data on the cosmic microwave background, in combination with previous WMAP and Planck data, impose strong new constraints on the tilt in the scalar perturbation spectrum, ns, as well as the tensor-to-scalar ratio, r. These constrain the number of e-folds of inflation, N*, the magnitude of the inflaton coupling to matter, y, and the reheating temperature, Treh, which we evaluate in attractor models of inflation as formulated in no-scale supergravity. The 68% C.L. region of (ns,r) favors large values of N*,y, and Treh that are constrained by the production of gravitinos and supersymmetric dark matter.