Prof. Seongchan Park, "A realistic composite model of inflation"

Thursday 30 May 2024, 16:00 → 18:00 Asia/Seoul

B436

We investigate the possibility that inflation originates from a composite field theory, in terms of an effective chiral Lagrangian involving a dilaton and pions. The walking dynamics of the theory constrain the potential in a specific way, where the anomalous dimensions of operators involving pions play a crucial role. For realistic values of the anomalous dimensions, we find a successful hybrid inflation occurring via the dilaton-inflaton, with the pions acting as waterfall fields. Compositeness consistency strongly constrain the model, predicting an inflation scale 10^10GeV. We further discuss possible phenomenological consequences of this theory.