Browsing by Author "5518508e-cb17-4df6-b089-fb74f620aabe"

Now showing items 1-4 of 4

    • A generalized non-gaussian consistency relation for single field inflation 
      Bravo, R.; Mooij, Sander; Palma Quilodrán, Gonzalo; Pradenas Márquez, Bastián (Iop Publishing LTD, 2018-05)
      We show that a perturbed inflationary spacetime, driven by a canonical single scalar field, is invariant under a special class of coordinate transformations together with a field reparametrization of the curvature ...
    • Adiabaticity and gravity theory independent conservation laws for cosmological perturbations 
      Romano, Antonio; Mooij, Sander; Sasaki, Misao (Elsevier, 2016)
      We carefully study the implications of adiabaticity for the behavior of cosmological perturbations. There are essentially three similar but different definitions of non-adiabaticity: one is appropriate for a thermodynamic ...
    • Consistency relations for sharp inflationary non-Gaussian features 
      Mooij, Sander; Palma Quilodrán, Gonzalo; Panotopoulos, Grigoris; Soto, Alex (IOP Publishing Ltd, 2016-09)
      If cosmic inflation suffered tiny time-dependent deviations from the slow-roll regime, these would induce the existence of small scale-dependent features imprinted in the primordial spectra, with their shapes and sizes ...
    • Vanishing of local non-gaussianity in canonical single field inflation 
      Bravo, R.; Mooij, Sander; Palma Quilodrán, Gonzalo; Pradenas Márquez, Bastián (IOP Publishing, 2018-05)
      We study the production of observable primordial local non-Gaussianity in two opposite regimes of canonical single field inflation: attractor (standard single field slow-roll inflation) and non attractor (ultra slow-roll ...