The Zeta-Zeta Correlator Is Time Dependent
arXiv:1006.3999 · doi:10.1016/j.physletb.2010.09.050
Abstract
We comment on the recent arguments by Senatore and Zaldarriaga that loop corrections to the zeta-zeta correlator cannot grow with time after first horizon crossing. We first emphasize the need to search for such secular dependence in corrections whose in-out matrix elements are infrared singular on an infinite spatial manifold. Then we give examples of such time dependence from pure quantum gravity and from scalar potential models. Finally, we point out that this time dependence arises from inflationary particle production and is therefore unlikely to endanger the preservation of super-horizon correlations as a record of inflation.
7 pages, 2 figures, uses Revtex4
References in corpus (22)
- Cosmology at Low Frequencies: The 21 cm Transition and the High-Redshift Universe
- Quantum Contributions to Cosmological Correlations II: Can These Corrections Become Large?
- Stochastic Inflationary Scalar Electrodynamics
- On the one loop corrections to inflation and the CMB anisotropies
- Leading Log Solution for Inflationary Yukawa
- Quantum Stability of a w < - 1 Phase of Cosmic Acceleration
- On the divergences of inflationary superhorizon perturbations
- On Resumming Inflationary Perturbations beyond One-loop
- Classical approximation to quantum cosmological correlations
- Cosmology With Many Light Scalar Fields: Stochastic Inflation and Loop Corrections
- Reply to `Can infrared gravitons screen ?'
- Gravitons Enhance Fermions during Inflation
- The curvature perturbation in a box
- Infrared Propagator Corrections for Constant Deceleration
- Two loop stress-energy tensor for inflationary scalar electrodynamics
- Two Loop Scalar Bilinears for Inflationary SQED
- Can infrared gravitons screen ?
- Fermion Mass Generation in de Sitter Space
- Quantum radiative corrections to slow-roll inflation
- On the Physical Significance of Infra-red Corrections to Inflationary Observables
- A Simple Operator Check of the Effective Fermion Mode Function during Inflation
- Quantum Cosmological Correlations in an Inflating Universe: Can fermion and gauge fields loops give a scale free spectrum?