Speaker
Description
In this talk, I will introduce the intriguing interplay between cosmology and strongly coupled dynamics, showing how temporary spectral features can leave lasting, observable imprints on the primordial fluctuation spectrum. Focusing on nearly conformal extensions of the Standard Model and employing AdS/CFT reasoning, I will demonstrate the emergence of gapped structures and distinct particle-like peaks in the scalar operator's spectral density within an inflationary setting. I will then estimate their contribution to cosmological observables, emphasizing unique, potentially detectable phenomena for future experiments, such as displaced oscillations in the squeezed bi-spectrum, originating from both fundamental and composite particles, and briefly touch upon the link between conformal symmetry breaking stabilization and these spectral signatures.
