Speaker
Description
Cosmic inflation was introduced to address several shortcomings of the standard Big Bang cosmology. The observed red tilt of the CMB power spectrum and potential future detection of primordial gravitational waves could provide valuable clues to reconstructing the inflaton potential. Recent small scale CMB measurements from the Atacama Cosmology Telescope (ACT), combined with Planck data, suggest an increased spectral index, creating tension with predictions of some well-studied inflationary models.
In this work, we investigate pole inflation in the presence of one-loop Coleman–Weinberg corrections arising from Standard Model or additional fields, focusing on both Higgs pole inflation and PQ pole inflation. We parametrize these loop effects as a running quartic coupling for the inflaton and study how the inflationary predictions change with different two-loop beta function coefficients of the running coupling.
