Probing Reheating with Primordial Spectrum

Abstract

The speaker studies the impacts of reheating temperature on the inflationary predictions of the spectral index and tensor-to-scalar ratio. Assuming that reheating process is very fast, the reheating temperature can be constrained for sinusoidal oscillation within a factor of 10 - 100 or even better with the prospect of future observations. Beyond this, he finds that the predictions can also be insensitive to the reheating temperature in certain models, including the Higgs inflation.