3 papers
astro-ph.CO2026
Cancellation of one-loop time dependence in superhorizon curvature perturbations from all scales
Keisuke Inomata
We show the conservation of the superhorizon curvature perturbations at one-loop level in spatially-flat gauge, including contributions from loop wavenumbers on all scales. In cont…
astro-ph.CO2025
Role of the counterterms in the conservation of superhorizon curvature perturbations at one loop
Keisuke Inomata
Recently, several papers have claimed that superhorizon curvature perturbations are not conserved at the one-loop level in single-field inflation models if there is a transient ult…
astro-ph.CO2025
Conservation of superhorizon curvature perturbations at one loop: Backreaction in the in-in formalism and Renormalization
Keisuke Inomata
We show that the superhorizon-limit curvature perturbations are conserved at one-loop level in single-field inflation models with a transient non-slow-roll period. We take the spat…