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SLAC Publication: SLAC-PUB-17094
SLAC Release Date: August 28, 2017
Symmetries and Loops in Inflation
Assassi, Valentin .
In this paper, we prove that the superhorizon conservation of the curvature perturbation zeta in single-field inflation holds as an operator statement. This implies that all zeta-correlators are time independent at all orders in the loop expansion. Our result follows directly from locality and diffeomorphism invariance of the underlying theory. We also explore the relationship between the conservation of zeta, the single-field consistency relation and the renormalization of composite operators.
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  • Interest Categories: HEP Phenomenology