July 9, 2020 to January 31, 2025
Europe/Zurich timezone

Back-reaction in the early universe

Apr 23, 2024, 3:00 PM


Laura Iacconi (Queen Mary University of London & University of Portsmouth)


Both single- and multi-field models of inflation might lead to enhanced scalar fluctuations on scales much smaller than those seeding the large-scale structure formation. In these scenarios, it is possible that the spike of power at high wavenumber might induce large corrections to the scalar power spectrum, e.g. in the form of loop corrections, potentially endangering the perturbativity of the underlying models. In this talk we discuss recent developments in the calculation of the 1-loop correction.

Presentation materials