Journal
JOURNAL OF HIGH ENERGY PHYSICS
Volume -, Issue 2, Pages -Publisher
SPRINGER
DOI: 10.1007/JHEP02(2013)151
Keywords
Cosmology of Theories beyond the SM; Space-Time Symmetries; Renormalization Regularization and Renormalons
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Funding
- European Research Council (ERC STG) [279617]
- Stanford ITP
- U.S. Department of Energy [DE-AC02-76SF00515]
- STFC [ST/G000581/1, ST/J000434/1] Funding Source: UKRI
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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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